I've a 2011 Intense uzzi VP and having problems in changing position of the G3 dropouts...

Are the shims due to be on the outer or inner side of the frame?

Furthermore, i've a bented shim and is really a pain to reposition the whole stuff... Anyone knows the measure of it, so to look for them at an hardware store, or know where to get them?
I tried to look around but really didn't find anything...