diff --git a/crates/brk_cli/src/run.rs b/crates/brk_cli/src/run.rs
index 3c9707ae4..29d50cf5f 100644
--- a/crates/brk_cli/src/run.rs
+++ b/crates/brk_cli/src/run.rs
@@ -133,7 +133,7 @@ pub struct RunConfig {
     #[arg(short, long)]
     computation: Option<Computation>,
 
-    /// Format of computed datasets, `compressed` to save disk space, `raw` to prioritize speed, default: `compressed`, saved
+    /// Format of computed datasets, `compressed` to save disk space (experimental), `raw` to prioritize speed, default: `raw`, saved
     #[serde(default, deserialize_with = "default_on_error")]
     #[arg(short, long)]
     format: Option<Format>,
diff --git a/crates/brk_computer/src/vecs/stateful/mod.rs b/crates/brk_computer/src/vecs/stateful/mod.rs
index eb5126271..735cd3fa9 100644
--- a/crates/brk_computer/src/vecs/stateful/mod.rs
+++ b/crates/brk_computer/src/vecs/stateful/mod.rs
@@ -1443,7 +1443,10 @@ impl Vecs {
                                 let height = txindex_to_height
                                     .get_or_read(input_txindex, &txindex_to_height_mmap)
                                     .unwrap()
-                                    .unwrap()
+                                    .unwrap_or_else(|| {
+                                        dbg!(input_txindex, txindex_to_height.len());
+                                        unreachable!("")
+                                    })
                                     .into_inner();
 
                                 (height, value, input_type)
diff --git a/crates/brk_server/src/api/mod.rs b/crates/brk_server/src/api/mod.rs
index 3e8fff14d..b5837440d 100644
--- a/crates/brk_server/src/api/mod.rs
+++ b/crates/brk_server/src/api/mod.rs
@@ -124,6 +124,7 @@ pub async fn variant_handler(
     Query(params_opt): Query<ParamsOpt>,
     state: State<AppState>,
 ) -> Response {
+    let variant = variant.replace("_", "-");
     let mut split = variant.split(TO_SEPARATOR);
     let params = Params::from((
         (
diff --git a/crates/brk_vec/src/traits/generic.rs b/crates/brk_vec/src/traits/generic.rs
index 3d4aab484..9cbbcf4f9 100644
--- a/crates/brk_vec/src/traits/generic.rs
+++ b/crates/brk_vec/src/traits/generic.rs
@@ -31,7 +31,7 @@ where
     }
     #[inline]
     fn get_or_read_(&self, index: usize, mmap: &Mmap) -> Result<Option<Value<T>>> {
-        let stored_len = mmap.len() / Self::SIZE_OF_T;
+        let stored_len = self.stored_len_(mmap);
 
         if index >= stored_len {
             let pushed = self.pushed();
@@ -53,6 +53,7 @@ where
     fn mmap(&self) -> &ArcSwap<Mmap>;
 
     fn stored_len(&self) -> usize;
+    fn stored_len_(&self, mmap: &Mmap) -> usize;
 
     fn pushed(&self) -> &[T];
     #[inline]
diff --git a/crates/brk_vec/src/variants/compressed.rs b/crates/brk_vec/src/variants/compressed.rs
index 841216cbc..73a11c83c 100644
--- a/crates/brk_vec/src/variants/compressed.rs
+++ b/crates/brk_vec/src/variants/compressed.rs
@@ -133,7 +133,7 @@ where
         page_index * Self::PER_PAGE
     }
 
-    fn stored_len_(pages_meta: &Guard<Arc<CompressedPagesMetadata>>) -> usize {
+    fn stored_len__(pages_meta: &Guard<Arc<CompressedPagesMetadata>>) -> usize {
         if let Some(last) = pages_meta.last() {
             (pages_meta.len() - 1) * Self::PER_PAGE + last.values_len as usize
         } else {
@@ -182,7 +182,11 @@ where
 
     #[inline]
     fn stored_len(&self) -> usize {
-        Self::stored_len_(&self.pages_meta.load())
+        Self::stored_len__(&self.pages_meta.load())
+    }
+    #[inline]
+    fn stored_len_(&self, _: &Mmap) -> usize {
+        self.stored_len()
     }
 
     #[inline]
@@ -481,7 +485,7 @@ where
 
     fn into_iter(self) -> Self::IntoIter {
         let pages_meta = self.pages_meta.load();
-        let stored_len = CompressedVec::<I, T>::stored_len_(&pages_meta);
+        let stored_len = CompressedVec::<I, T>::stored_len__(&pages_meta);
         CompressedVecIterator {
             vec: self,
             guard: self.mmap().load(),
diff --git a/crates/brk_vec/src/variants/raw.rs b/crates/brk_vec/src/variants/raw.rs
index 9b682087a..b2287915c 100644
--- a/crates/brk_vec/src/variants/raw.rs
+++ b/crates/brk_vec/src/variants/raw.rs
@@ -104,7 +104,11 @@ where
 
     #[inline]
     fn stored_len(&self) -> usize {
-        self.mmap.load().len() / Self::SIZE_OF_T
+        self.stored_len_(&self.mmap.load())
+    }
+    #[inline]
+    fn stored_len_(&self, mmap: &Mmap) -> usize {
+        mmap.len() / Self::SIZE_OF_T
     }
 
     #[inline]
diff --git a/crates/brk_vec/src/variants/stored.rs b/crates/brk_vec/src/variants/stored.rs
index a9ca895ff..c5aef5bf3 100644
--- a/crates/brk_vec/src/variants/stored.rs
+++ b/crates/brk_vec/src/variants/stored.rs
@@ -73,6 +73,13 @@ where
             StoredVec::Compressed(v) => v.stored_len(),
         }
     }
+    #[inline]
+    fn stored_len_(&self, mmap: &Mmap) -> usize {
+        match self {
+            StoredVec::Raw(v) => v.stored_len_(mmap),
+            StoredVec::Compressed(v) => v.stored_len_(mmap),
+        }
+    }
 
     #[inline]
     fn pushed(&self) -> &[T] {