Most records are cut at a 22 degree VTA. So if you can emulate the angle with the cantilever you are 95% there. I cut a 22 degree angle in a piece of white board bent it at rt. angles so that it would stand up , placed it on a stationary record on the turn-able, lowered the stylus/tonearm onto the record, lined up the cantilever with the 22 degree edge of the card by adjusting the VTA and I had almost hit the hot spot immediately. After that it is minor increments where you let your ear take over.
