diff --git a/tinygrad/lazy.py b/tinygrad/lazy.py
index 2c979aec14..47e224b198 100644
--- a/tinygrad/lazy.py
+++ b/tinygrad/lazy.py
@@ -263,23 +263,17 @@ class LazyBuffer:
       # hack for non multiples of 4 on C.cin
       if C.cin % 4 != 0 and not (C.cin == 1 and C.groups%4 == 0):
         to_add = 4 - (C.cin % 4)
-        ws = [(0, 0) for _ in w.shape]
-        ws[2] = (0, to_add)
-        w = w.movement_op(MovementOps.PAD, ws)
+        w = w.movement_op(MovementOps.PAD, [(0, to_add) if i == 2 else (0, 0) for i in range(len(w.shape))])
 
         x = x.movement_op(MovementOps.RESHAPE, (C.bs, C.groups, C.cin, C.iy, C.ix))
-        xs = [(0, 0) for _ in x.shape]
-        xs[2] = (0, to_add)
-        x = x.movement_op(MovementOps.PAD, xs)
+        x = x.movement_op(MovementOps.PAD, [(0, to_add) if i == 2 else (0, 0) for i in range(len(x.shape))])
         C = C._replace(cin = C.cin + to_add)
         x = x.movement_op(MovementOps.RESHAPE, (C.bs, C.groups*C.cin, C.iy, C.ix))
 
       # hack for non multiples of 4 on C.rcout
       if C.rcout % 4 != 0 and not (C.rcout == 1 and C.groups%4 == 0):
         added_output_channels = 4 - (C.rcout % 4)
-        ws = [(0, 0) for _ in w.shape]
-        ws[1] = (0, added_output_channels)
-        w = w.movement_op(MovementOps.PAD, ws)
+        w = w.movement_op(MovementOps.PAD, [(0, added_output_channels) if i == 1 else (0, 0) for i in range(len(w.shape))])
         C = C._replace(rcout = C.rcout + added_output_channels, cout = C.groups * (C.rcout + added_output_channels))
       else:
         added_output_channels = 0
@@ -347,9 +341,7 @@ class LazyBuffer:
       # undo hack for non multiples of 4 on C.rcout
       if added_output_channels != 0:
         ret = ret.movement_op(MovementOps.RESHAPE, (C.bs, C.oy, C.ox, C.groups, C.rcout))
-        xs = [(0, s) for s in ret.shape]
-        xs[4] = (0, ret.shape[4]-added_output_channels)
-        ret = ret.movement_op(MovementOps.SHRINK, xs)
+        ret = ret.movement_op(MovementOps.SHRINK, [(0, s-added_output_channels) if i == 4 else (0, s) for i,s in enumerate(ret.shape)])
         C = C._replace(rcout = C.rcout - added_output_channels, cout = C.groups * (C.rcout - added_output_channels))
 
       ret = ret.movement_op(MovementOps.RESHAPE, (C.bs, C.oy, C.ox, C.cout))