I am looking a Sun Atlas Cargo bike (similar to the Surly Big dummy). It a used frame and the back brake studs are tilting to one side a few degrees, one more than the other. They don't look bent but they were welded on crooked. Both are tilted to the leftside of the frame. The left stud is tilted extra. The tilt is away from the rim on the left and towards the rim on the right. Unfortunately no picture. I am good at setting up brakes but I have never encountered this. I would be installing XT VBrakes. Can they adjust to deal with this problem?