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GB Just wondering if you have a adjustable proportioning valve plumbed into the rear brake line, gives adjustability for front to rear bias when using unrelated brake systems, if your rears are locking up first this is what needs to be done so the fronts have more bite.

When I had mine redrilled by Moser Engineering ( I am told they are not doing these any more) I used 1/2" screw in studs and one of them is right along the edge of one of the ribs. It does not go directly through it, but rather right along the side. The threads may cut into it slightly. On another one they cut the stud flush with the surface and drilled one of the studs through part of the existing stud. This is the only way the pattern ( 5 x 4 1/2") lines up. I am happy to say they have been working perfectly.