diff --git a/ufos/src/consumer.rs b/ufos/src/consumer.rs
index 27a813c..880f4a7 100644
--- a/ufos/src/consumer.rs
+++ b/ufos/src/consumer.rs
@@ -79,7 +79,7 @@ impl Batcher {
         batch_sender: Sender<LimitedBatch>,
         sketch_secret: SketchSecretPrefix,
     ) -> Self {
-        let mut rate_limit = tokio::time::interval(std::time::Duration::from_millis(5));
+        let mut rate_limit = tokio::time::interval(std::time::Duration::from_millis(3));
         rate_limit.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
         Self {
             jetstream_receiver,
@@ -93,7 +93,12 @@ impl Batcher {
     pub async fn run(&mut self) -> anyhow::Result<()> {
         // TODO: report errors *from here* probably, since this gets shipped off into a spawned task that might just vanish
         loop {
-            match timeout(Duration::from_millis(9_000), self.jetstream_receiver.recv()).await {
+            match timeout(
+                Duration::from_millis(30_000),
+                self.jetstream_receiver.recv(),
+            )
+            .await
+            {
                 Err(_elapsed) => self.no_events_step().await?,
                 Ok(Some(event)) => self.handle_event(event).await?,
                 Ok(None) => anyhow::bail!("channel closed"),
diff --git a/ufos/src/file_consumer.rs b/ufos/src/file_consumer.rs
index a42833c..375ba0a 100644
--- a/ufos/src/file_consumer.rs
+++ b/ufos/src/file_consumer.rs
@@ -1,5 +1,6 @@
 use crate::consumer::{Batcher, LimitedBatch, BATCH_QUEUE_SIZE};
 use crate::store_types::SketchSecretPrefix;
+use crate::Cursor;
 use anyhow::Result;
 use jetstream::{error::JetstreamEventError, events::JetstreamEvent};
 use std::path::PathBuf;
@@ -9,8 +10,32 @@ use tokio::{
     sync::mpsc::{channel, Receiver, Sender},
 };
 
-async fn read_jsonl(f: File, sender: Sender<JetstreamEvent>) -> Result<()> {
+async fn read_jsonl(f: File, sender: Sender<JetstreamEvent>, cursor: Option<Cursor>) -> Result<()> {
     let mut lines = BufReader::new(f).lines();
+    if let Some(db_cursor) = cursor {
+        log::info!("jsonl fixture: skipping events before cursor {db_cursor:?}");
+        let mut bad_lines = 0;
+        let mut skipped = 0;
+        while let Some(line) = lines.next_line().await? {
+            let Ok(event) = serde_json::from_str::<JetstreamEvent>(&line) else {
+                bad_lines += 1;
+                continue;
+            };
+            if event.cursor < db_cursor {
+                skipped += 1;
+                continue;
+            }
+            if event.cursor == db_cursor {
+                log::info!("jsonl fixture: found existing db cursor! skipped {skipped} old events and failed parsing {bad_lines} lines");
+                break;
+            }
+            anyhow::bail!("jsonl fixture: did not find existing db cursor, found event cursor {:?} which is newer. bailing.", event.cursor);
+        }
+    } else {
+        log::info!("jsonl fixture: no cursor provided, sending every event");
+    }
+
+    log::info!("jsonl fixture: now sending events");
     while let Some(line) = lines.next_line().await? {
         match serde_json::from_str::<JetstreamEvent>(&line) {
             Ok(event) => match sender.send(event).await {
@@ -35,18 +60,19 @@ async fn read_jsonl(f: File, sender: Sender<JetstreamEvent>) -> Result<()> {
 pub async fn consume(
     p: PathBuf,
     sketch_secret: SketchSecretPrefix,
+    cursor: Option<Cursor>,
 ) -> Result<Receiver<LimitedBatch>> {
     let f = File::open(p).await?;
     let (jsonl_sender, jsonl_receiver) = channel::<JetstreamEvent>(16);
     let (batch_sender, batch_reciever) = channel::<LimitedBatch>(BATCH_QUEUE_SIZE);
     let mut batcher = Batcher::new(jsonl_receiver, batch_sender, sketch_secret);
     tokio::task::spawn(async move {
-        let r = read_jsonl(f, jsonl_sender).await;
-        log::info!("read_jsonl finished: {r:?}");
+        let r = read_jsonl(f, jsonl_sender, cursor).await;
+        log::warn!("read_jsonl finished: {r:?}");
     });
     tokio::task::spawn(async move {
         let r = batcher.run().await;
-        log::info!("batcher finished: {r:?}");
+        log::warn!("batcher finished: {r:?}");
     });
     Ok(batch_reciever)
 }
diff --git a/ufos/src/main.rs b/ufos/src/main.rs
index 496fd6f..e5d8f61 100644
--- a/ufos/src/main.rs
+++ b/ufos/src/main.rs
@@ -130,7 +130,7 @@ async fn go<B: StoreBackground>(
 
     let batches = if jetstream_fixture {
         log::info!("starting with jestream file fixture: {jetstream:?}");
-        file_consumer::consume(jetstream.into(), sketch_secret).await?
+        file_consumer::consume(jetstream.into(), sketch_secret, cursor).await?
     } else {
         log::info!(
             "starting consumer with cursor: {cursor:?} from {:?} ago",
@@ -163,8 +163,10 @@ async fn do_update_stuff(read_store: impl StoreReader) {
     let mut last_at = std::time::SystemTime::now();
     let mut last_cursor = None;
     let mut last_rollup = None;
+    let mut interval = tokio::time::interval(std::time::Duration::from_secs(4));
+    interval.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
     loop {
-        tokio::time::sleep(std::time::Duration::from_secs_f64(4.)).await;
+        interval.tick().await;
         match read_store.get_consumer_info().await {
             Err(e) => log::warn!("failed to get jetstream consumer info: {e:?}"),
             Ok(ConsumerInfo::Jetstream {
diff --git a/ufos/src/storage_fjall.rs b/ufos/src/storage_fjall.rs
index e031f8d..10fba9a 100644
--- a/ufos/src/storage_fjall.rs
+++ b/ufos/src/storage_fjall.rs
@@ -1241,8 +1241,8 @@ impl StoreWriter<FjallBackground> for FjallWriter {
         let mut ended_early = false;
         let mut batch = self.keyspace.batch();
         for (i, kv) in self.feeds.range(live_range).rev().enumerate() {
-            if !full_scan && i > 1_000_000 {
-                log::info!("stopping collection trim early: already scanned 1M elements");
+            if !full_scan && i > 10_000_000 {
+                log::info!("stopping collection trim early: already scanned 10M elements");
                 ended_early = true;
                 break;
             }
@@ -1336,11 +1336,11 @@ impl StoreBackground for FjallBackground {
         let mut dirty_nsids = HashSet::new();
 
         let mut rollup =
-            tokio::time::interval(Duration::from_millis(if backfill { 1 } else { 81 }));
-        rollup.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
+            tokio::time::interval(Duration::from_micros(if backfill { 100 } else { 81_000 }));
+        rollup.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Skip);
 
         let mut trim =
-            tokio::time::interval(Duration::from_millis(if backfill { 3_000 } else { 6_000 }));
+            tokio::time::interval(Duration::from_millis(if backfill { 500 } else { 6_000 }));
         trim.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Skip);
 
         loop {
@@ -1362,8 +1362,8 @@ impl StoreBackground for FjallBackground {
                         let (danglers, deleted) = self.0.trim_collection(collection, 512, false).inspect_err(|e| log::error!("trim error: {e:?}"))?;
                         total_danglers += danglers;
                         total_deleted += deleted;
-                        if total_deleted > 1_000_000 {
-                            log::info!("trim stopped early, more than 1M records already deleted.");
+                        if total_deleted > 100_000_000 {
+                            log::info!("trim stopped early, more than 100M records already deleted.");
                             break;
                         }
                     }