Atomic 412 fullflex with large boots

Hi,
I bought a pair of Atomi 412 for my R EXs and ran into a problem.
Apparently the fullflex system is only made for boots up to 350. Mine
are 355. Has anybody else ran into this problem? can you get the
bindings in a differnet size? It looks like all I need is a longer
metal strap. I think I am going to have a shop lazer cut me a set but
I wanted to check here to see if anybody else had another suggestion.
Or if anybody else would be interested in a set of straps to fit thier
big feet into. It would greatly reduce my cost if I could find one or
two people that would want them.

-Doug