Originally Posted by 1/8 kid

building up a new bike and i ran into a little problem.
the rear derailleur bolt sticks past the derailleur hanger when fully screwed in.
the chain is running into/grinding on the back of the rear derailleur bolt when running on the smallest cog.
i'm running a campy 10 speed setup... record cassette, record hub, centaur rear derailleur and a dx10 chain on a old bianchi stelvio frame.
never had this problem before.
can i/should i just file down the bolt so it's flush with the back of the derailleur hanger?
or is that a bad idea?
should i respace the hub to the left to get more clearance then redish the wheel?
any ideas?

thanks.