diff --git a/holder.py b/holder.py
index 5a79ac3..a093b8f 100644
--- a/holder.py
+++ b/holder.py
@@ -305,10 +305,11 @@ def _filter_params(params: dict) -> dict:
             continue
         p = known[k]
         if p.kind == "number":
-            v = float(v) if p.step and p.step != int(p.step) else int(float(v))
-            # keep ints for integer-step params
-            if isinstance(p.default, int) and float(v).is_integer():
-                v = int(v)
+            # Always coerce through float — earlier logic short-circuited to
+            # int(float(v)) when step was None (most auto-extracted params),
+            # truncating decimals like box_clearance=0.2 → 0.
+            fv = float(v)
+            v = int(fv) if fv.is_integer() else fv
         elif p.kind == "bool":
             v = bool(v)
         elif p.kind == "select":