If one pad is further out than the other, try putting the caliper where it should be, then forcing the disc over to one side as you squezze the brakes. This should force one piston out further than the other and can take away any asymmetry.
@chiroshi started
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If one pad is further out than the other, try putting the caliper where it should be, then forcing the disc over to one side as you squezze the brakes. This should force one piston out further than the other and can take away any asymmetry.