Used to be I'd run into a snag about once a month ... seems like it's every week these days .... Had my entire brake system replaced about 3 months ago ... including rebuilding the calipers and resurfacing the rotors! Last Friday at take off, I noticed a popping/clicking sound in the left front wheel. As it got worse I noticed my truck would pull to the left when braking. Sound changes while applying brakes. This is after dealing with a bad proportioning valve since new. Had about 3 months where the truck braked in a straight line. First time ever. I'm thinking bad wheel bearing. Any thoughts? Of course I'm wondering if the guy that resurfaced the rotors repacked my bearings or just slapped it together. Ps. New master cylinder is leaking again, also.