I got my AST's machined (slots extended) as didn't want the half size camber bolts moving\giving up when out on track...think they are quit a bit thinner than the standard bolts. Plus you can only get 2 - 2.5 degrees of camber with them (I think)....I run 3.5 now. You'll need more camber than you think once your experience\speed improves...
Funny you mention that as that's what Mark Fish did to mine. I did supply the camber bolts but he said he didnt want to use them!