trying to get the outer and middle chain rings off some hones, but as you turn the allen key, it just turns the bit behind with the screw driver slot in, i know normal proceedure is to stick a flat blade screw driver in the slot, but the bolt sticks through too far so i can only get a tiny amount of perchase on one side of the slot, ive coated the bolts in wd40 and gonna give it another shot later, but anyone got any top tips or been in a similar situation?

Matt.

damn, that looks alot better than a screw driver, kinda wish i hadn't spent 45 mins skining my knuckles now... got them out though, good old wd40 

Matt.