Can't seem to figure this one out. I've got 105 parts with a 12-25 cassette, shifting works fine but when on the second or third largest sprockets the top of the pulley comes in contact with the largest sprocket. I tried shortening the chain but the chain was too short to reach all gears and still didn't solve the problem. I've tried using the b-limit screw but it did absolutely nothing.
I've done a search and turned up a couple of threads that seemed to end without answer. Any ideas?
EDIT: Also, I've built this bike recently myself (first build) the parts are used but there are no bent or otherwise damaged parts.