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you can clock your pads by installing them clamped onto axle tube with the U bolts and rotating your axle to where you want it to sit nose wise. Once you are comfortable with it, tack them into position and them run a full bead once its out again. Run about an inch at a time alternating between sides to keep the heat down. The springs will make them sit perfectly in line with each other assuming your springs are good. I had an old mechanic tell me they made some rears a degree off to track better, sort of toe in. COuld be BS for all I know.