Hi, I am fitting a BSA 8 in single sided brake to an AJS bike. Thanks for the rim offset info; now another question. The alloy brake back plate has a 7/16 20 tpi stud for the torque arm between fork leg and backplate. This stud is fitted through the backplate and is secured by a nut on the inside face, the end of the stud has been peened over to stop the nut loosening; the stud is obviously not intended to be removed in normal service. How do I replace it? Is the stud threaded into the alloy with a locknut for security, or is it a push fit, held in by the nut? Do I file/drill away the peening, remove the nut, lock 2 nuts on the stud and unscrew, or press it out? Does the stud come loose easily without damaging the softer alloy, or would I be better leaving it in place as the risk of damage is too high? Thanks, Andy