Originally Posted by
cxwrench
It's always the correct way to adjust. If there is only one adjustable piston you move the caliper and then adjust the inner piston. I don't think I need to repeat my earlier advice again.
Re-aligning the caliper every time you need to compensate for pad wear would be a huge waste of time. On my MTB I would be doing that every other ride.
Avid seems to agree with me, as they specify using the barrel adjuster for the BB5:
https://www.servicearchive.sram.com/...d7_English.pdf
But this is really just a sidebar, as the OP has BB7s.