diff --git a/io_mesh_pdb/__init__.py b/io_mesh_pdb/__init__.py
index c08c642ee27000f14a67c8b44aa009a232728d04..7cd3d3e6b8f1c53a5e409a75a00a3a2b394aaa32 100644
--- a/io_mesh_pdb/__init__.py
+++ b/io_mesh_pdb/__init__.py
@@ -87,75 +87,72 @@ class CLASS_atom_pdb_panel(Panel):
         scn    = bpy.context.scene
 
         row = layout.row()
+        row.label(text="Outputs and custom data file")
+
+        box = layout.box()
+        row = box.row()
         row.label(text="Custom data file")
-        row = layout.row()
+        row = box.row()
         col = row.column()
         col.prop(scn, "atom_pdb_datafile")
         col.operator("atom_pdb.datafile_apply")
-        row = layout.row()
+        row = box.row()
         col = row.column(align=True)
         col.prop(scn, "atom_pdb_PDB_file")
 
-        layout.separator()
-
         row = layout.row()
+        row.label(text="Reload structure")
+
+        box = layout.box()
+        row = box.row()
         col = row.column(align=True)
         col.prop(scn, "use_atom_pdb_mesh")
         col.prop(scn, "atom_pdb_mesh_azimuth")
         col.prop(scn, "atom_pdb_mesh_zenith")
-
-
         col = row.column(align=True)
         col.label(text="Scaling factors")
         col.prop(scn, "atom_pdb_scale_ballradius")
         col.prop(scn, "atom_pdb_scale_distances")
-        row = layout.row()
+        row = box.row()
         col = row.column()
         col.prop(scn, "use_atom_pdb_sticks")
         col = row.column(align=True)
         col.prop(scn, "atom_pdb_sticks_sectors")
         col.prop(scn, "atom_pdb_sticks_radius")
-
-        row = layout.row()
+        row = box.row()
         row.prop(scn, "use_atom_pdb_center")
-
-        row = layout.row()
+        row = box.row()
         col = row.column()
         col.prop(scn, "use_atom_pdb_cam")
         col.prop(scn, "use_atom_pdb_lamp")
         col = row.column()
         col.operator("atom_pdb.button_reload")
-
         # TODO, use lanel() instead
         col.prop(scn, "atom_pdb_number_atoms")
 
-        layout.separator()
-
         row = layout.row()
+        row.label(text="Modify atom radii")
+        box = layout.box()
+        row = box.row()
         row.operator("atom_pdb.button_distance")
         row.prop(scn, "atom_pdb_distance")
-        layout.separator()
-
-        row = layout.row()
+        row = box.row()
         row.label(text="All changes concern:")
-        row = layout.row()
+        row = box.row()
         row.prop(scn, "atom_pdb_radius_how")
-
-        row = layout.row()
+        row = box.row()
         row.label(text="1. Change type of radii")
-        row = layout.row()
+        row = box.row()
         row.prop(scn, "atom_pdb_radius_type")
-
-        row = layout.row()
+        row = box.row()
         row.label(text="2. Change atom radii in pm")
-        row = layout.row()
+        row = box.row()
         row.prop(scn, "atom_pdb_radius_pm_name")
-        row = layout.row()
+        row = box.row()
         row.prop(scn, "atom_pdb_radius_pm")
-
-        row = layout.row()
+        row = box.row()
         row.label(text="3. Change atom radii by scale")
-        row = layout.row()
+        row = box.row()
         col = row.column()
         col.prop(scn, "atom_pdb_radius_all")
         col = row.column(align=True)
@@ -164,8 +161,10 @@ class CLASS_atom_pdb_panel(Panel):
 
         if bpy.context.mode == 'EDIT_MESH':
 
-            layout.separator()
             row = layout.row()
+            row.label(text="Separate atom")
+            box = layout.box()
+            row = box.row()
             row.operator( "atom_pdb.separate_atom" )
 
 
diff --git a/io_mesh_pdb/import_pdb.py b/io_mesh_pdb/import_pdb.py
index 69008142bde63276e593c4cc28918ac7fd727f69..b8da5051166eb4d65b92a55daf45e352da5ef764 100644
--- a/io_mesh_pdb/import_pdb.py
+++ b/io_mesh_pdb/import_pdb.py
@@ -25,7 +25,7 @@
 #
 #  Start of project              : 2011-08-31 by Clemens Barth
 #  First publication in Blender  : 2011-11-11
-#  Last modified                 : 2011-12-01
+#  Last modified                 : 2011-12-22
 #
 #  Acknowledgements: Thanks to ideasman, meta_androcto, truman, kilon,
 #  dairin0d, PKHG, Valter, etc
@@ -1080,7 +1080,7 @@ def DEF_atom_pdb_main(use_mesh,Ball_azimuth,Ball_zenith,
 
         vertices = []
         faces    = []
-        dl = 0.2
+        dl = 0.1
 
         i = 0
         # For all sticks, do ...