Mijostyn, is it really true that most tonearms are mounted incorrectly regarding P2S distance? I would have thought that overhang was the most common error. The very first and really only important thing to do when mounting a new tonearm is to get P2S as precisely as possible to the recommended distance. After that, setting overhang is a piece of cake. So why assume that the same tonearm mounted on the same TT in two separate instances by two different operators, will exhibit a difference in P2S? Bear in mind that I’ve never seen a Mint protractor, let alone used one. I guess what Raul is saying is that P2S for Stevenson is different from correct P2S for either of the Lofgren alternatives. Therefore, one ought not to use a Mint protractor to achieve a perfect Lofgren alignment, unless the Mint was specifically created for Lofgren A or B.
I sheepishly agree with fsonic on the minimal benefits of being anal regarding alignment.