diff --git a/battery-case-generator.py b/battery-case-generator.py
index 4ac7931..b501b71 100755
--- a/battery-case-generator.py
+++ b/battery-case-generator.py
@@ -20,7 +20,7 @@ parser.add_argument('--extra-height', default=2.0, type=float, help='Extra verti
 parser.add_argument('--thickness', default=3.0, type=float, help='Thickness of material')
 parser.add_argument('--lid', default=0.2, type=float, help='How much extra play to give the lid')
 parser.add_argument('--tooth', default=0.8, type=float, help='How much to round the edges of the teeth')
-parser.add_argument('--flex-granularity', default=1.7, type=float, help='How much space to give a pair of flex lines')
+parser.add_argument('--flex-granularity', default=1.8, type=float, help='How much space to give a pair of flex lines')
 parser.add_argument('--verbose', action='store_true', help='Print computed parameter values')
 args = parser.parse_args()
 assert (args.dimension % 2) == 1
@@ -60,15 +60,15 @@ args.exterior_leg  = (finger_length-(2*args.n_hor_fingers-1)*args.horizontal_fin
 args.wall_leg      = (args.interior_edge-args.corner-(2*args.n_hor_fingers-1)*args.horizontal_finger+args.kerf)/2
 args.exterior_slot = (args.interior_edge-args.horizontal_finger+args.kerf)/2
 args.n_ver_fingers = int((args.height+args.extra_height)/args.vertical_finger)
-top_slot           = args.extra_height+0.5*args.height
-args.slots         = [top_slot, top_slot+2*args.thickness]
+top_slot           = args.extra_height+args.thickness+0.5*args.height
+args.slots         = [top_slot, top_slot+10.0]
 
 if args.verbose:
     print(args, file=sys.stderr)
 
 BOX    = 2.0*args.exterior_edge+5.0
 DIMX   = 3.0*BOX
-DIMY   = 2.0*BOX+args.height+args.extra_height+2.0*args.thickness+5.0
+DIMY   = 2.0*BOX+args.height+args.extra_height+3.0*args.thickness+5.0
 PI3    = math.pi/3
 
 HOLES  = ''
@@ -295,6 +295,6 @@ draw_plane(1.5*BOX, 1.5*BOX, 'rim')
 draw_plane(1.5*BOX, 1.5*BOX, 'plug')
 draw_plane(2.5*BOX, 1.5*BOX, 'lid')
 draw_plane(2.5*BOX, 1.5*BOX, 'plug_mark')
-draw_case(0.05*args.grid*args.dimension, 2.0*BOX, args.height+args.extra_height, args.slots)
-print('<g fill="none" stroke="red">', HOLES, '</g>', '<g fill="none" stroke="blue">', MARKS, '</g>', '<g fill="none" stroke="black">', SHAPES, '</g>', sep='\n')
+draw_case(0.05*args.grid*args.dimension, 2.0*BOX, args.height+args.extra_height+args.thickness, args.slots)
+print('<g fill="none" stroke="black">', SHAPES, '</g>', '<g fill="none" stroke="red">', HOLES, '</g>', '<g fill="none" stroke="blue">', MARKS, '</g>', sep='\n')
 print('</svg>')