Originally Posted by
due ruote
While that overhaul guide is helpful, I would heed the advice on page 4:
The most common problem that doesn’t require disassembly
Your problems sound more like adjustment issues rather than a mechanical issue. I would suggest trying
this guide on setting up BB7s before you go tearing the brake apart. The guide I linked to has helped me many times even when setting up non-Avid mechanical brakes. And look at your rotors.