Buy a Mint LP "Best Tractor" custom made for your arm and be done. The Project is crudely marked, with lines too think to be of any true accuracy - it's made for their tonearms on their tables, and the markings on the protractor itself merely correspond to the various effective lengths of their products only. If your SME happens to correspond with one of the 4 on offer, great, but if not, you're SOL. Your system deserves better; buy the Mint (which is around the same price anyway).