diff --git a/linc_convert/modalities/df/multi_slice.py b/linc_convert/modalities/df/multi_slice.py
index d66136f..e9380f3 100644
--- a/linc_convert/modalities/df/multi_slice.py
+++ b/linc_convert/modalities/df/multi_slice.py
@@ -40,7 +40,7 @@ def convert(
     inp: list[str],
     out: str | None = None,
     *,
-    chunk: int = 4096,
+    chunk: int = 1024,
     compressor: str = "blosc",
     compressor_opt: str = "{}",
     max_load: int = 16384,
@@ -131,7 +131,7 @@ def convert(
             new_width = jp2.shape[1]
     new_size = (new_height, new_width)
     if has_channel:
-        new_size += (3.0,)
+        new_size += (3,)
     print(len(inp), new_size, nblevel, has_channel)
 
     # Prepare chunking options
@@ -174,43 +174,41 @@ def convert(
             x = floordiv(shape[-2] - subdat_size[-2], 2)
             y = floordiv(shape[-1] - subdat_size[-1], 2)
 
-            if max_load is None or (shape[-2] < max_load and shape[-1] < max_load):
-                array[..., idx, x : x + subdat_size[1], y : y + subdat_size[2]] = (
-                    subdat[...]
-                )
-
-            else:
-                ni = ceildiv(shape[-2], max_load)
-                nj = ceildiv(shape[-1], max_load)
-
-                for i in range(ni):
-                    for j in range(nj):
-                        print(f"\r{i+1}/{ni}, {j+1}/{nj}", end=" ")
-                        start_x, end_x = (
-                            i * max_load,
-                            min((i + 1) * max_load, shape[-2]),
-                        )
-                        start_y, end_y = (
-                            j * max_load,
-                            min((j + 1) * max_load, shape[-1]),
-                        )
-                        if end_x <= x or end_y <= y:
-                            continue
-
-                        if start_x >= subdat_size[-2] or start_y >= subdat_size[-1]:
-                            continue
-
-                        array[
-                            ...,
-                            idx,
-                            x + start_x : x + min(end_x, subdat_size[-2]),
-                            y + start_y : y + min(end_y, subdat_size[-1]),
-                        ] = subdat[
-                            ...,
-                            start_x : min((i + 1) * max_load, subdat_size[-2]),
-                            start_y : min((j + 1) * max_load, subdat_size[-1]),
-                        ]
-                print("")
+            for channel in range(3):
+                if max_load is None or (
+                    subdat_size[-2] < max_load and subdat_size[-1] < max_load
+                ):
+                    array[
+                        channel, idx, x : x + subdat_size[-2], y : y + subdat_size[-1]
+                    ] = subdat[channel : channel + 1, ...][0]
+                else:
+                    ni = ceildiv(subdat_size[-2], max_load)
+                    nj = ceildiv(subdat_size[-1], max_load)
+
+                    for i in range(ni):
+                        for j in range(nj):
+                            print(f"\r{i+1}/{ni}, {j+1}/{nj}", end=" ")
+                            start_x, end_x = (
+                                i * max_load,
+                                min((i + 1) * max_load, subdat_size[-2]),
+                            )
+                            start_y, end_y = (
+                                j * max_load,
+                                min((j + 1) * max_load, subdat_size[-1]),
+                            )
+
+                            array[
+                                channel,
+                                idx,
+                                x + start_x : x + end_x,
+                                y + start_y : y + end_y,
+                            ] = subdat[
+                                channel : channel + 1,
+                                start_x:end_x,
+                                start_y:end_y,
+                            ][0]
+
+                    print("")
 
     # Write OME-Zarr multiscale metadata
     print("Write metadata")