I often go over research articles and educational materials while I eat lunch at work. Here's something I was reminded of today.

Origins of persistent injuries and pain syndromes in cyclists:
Poor bike fit
Improper sport skill (eg poor pedaling technique, cleats, shifting)
Improper physical preparation (flexibility, strength, posture)
Training errors (inappropriate intensity and volume progression)

There's a lot more going on here with pain while cycling than just bike fit. It's another good reason to seek out a PT that knows how to do bike fitting. A PT can help a cyclist evaluate the other contributing factors in addition to fit.