Subject: Re: Vmax Rear Brake Drag Shimming should not be necessary. There are two washers of different thickness that go on each end of the rear wheel axle - but might get put bac into the wrong place, causing the offset. The thick washer goes on the left, gear side, while the thinner one goes in between the notch of the swingarm and rear caliper bracket. Putting it somewhere else will offset that rear disk and cause drag. The caliper has a manufacturing groove from the mold that aligns nicely with the center of the disc - at least it should. Bert W Dallas, TX