Originally Posted by
draganm
LOL, we're many, many posts into this thread where plenty of information has been supplied about frames, cranks, FD's , etc., yet for all your scientific specificiationism i didn't see you recommend a single fact in terms of BB spindle length or parts to match up. Others did , and didn't even need to be condescending about it.
It's not even worth debating, I will continue to depend in my intuition and apparently amazing luck in assembling bikes since 99% of the time I get the results I want. I'll be sure to report back after I've tried some random parts i picked by throwing darts at a catalog.

Neither of you provided the frame, crank, BB spindle length, chainline number and front derailleur model.
As for your bike, I couldn't say based on the little you provided, but I would point out that you tried to put an Exage crank built for 45mm chainline on a bike built for 47.5mm chainline without adding the full 5mm spindle length necessary - you added 2mm. No wonder it didn't work. But I can't tell if that's the
only reason.
But since you already moved on to your next guess, there wasn't much point in fixing your old crank problem.