You mean that the bolts are messed up and the allen just turns inside?
no they wont budge...Trie0 is the best betd a breaker bar over the allen bolt... No dice, I think WD-40 might be the best bet!
OK, you can also try heating them up with a torch, but be careful that you do not damage other components. Heating may be your best option. Most likely it's rusted in there.
Also, try to put the allen socket on it and hammer on it to loosen up.