Replying to What's the margin for...

Boots fitting in already mounted bindings, I need to get new boots, I can't take my old ones any longer, they're cold, painful, put me in a strange position, and flex funny if at all. I was thinking of getting spks, either kreation or kaos from one or two years ago. I have bindings mounted on my skis already for a boot that's like about 11.5 inches in length (which is like 29 cm), If i got boots that were just a little bigger in size, would I need to remount my bindings? Or don't the bindings slide a little bit on their current mount? Or maybe the same size spk's will feel better.

Anyone know something about this?