Hey everyone,

I'm setting up some Avid BB7s on a surly big dummy. The discs are mounted to phil wood hubs. Unfortunately, I'm running into a problem with the front brake. Following proper procedure, the tri-align washers on the bottom hit the rotor arms. By using a wedge while I set the pivot, I was able to get it to not rub, but the clearance is so tight that when you put extra lateral force while riding the bike uphill, they hit. It looks like the adaptor is running too close to the disc, so much so that it causes the caliper to run too close to the disc. I have run into this before with other brakes. Have you? Any solutions? I have already measured the hub, which runs at 101.5 mm, same as the dropouts.