I recently swapped out the cheap Tektro disc brakes on my recumbent for Avid BB7s. It's quite an improvement, but the shop didn't do a great job getting things adjusted.
Ever since being back on the 'bent, I've felt a lot slower. I was cleaning and lubing the bike yesterday when I noticed the the front brake was dragging - A LOT.
Adjusting the pads wasn't enough. I had to loosen the caliper bolts and recenter the caliper, then adjust the pads. Bingo! No more dragging.
I'm heading off for a 100K ride shortly. Will I still feel horribly slow? Were the brakes making that much difference? I'll know later.