the other big trick with alignment tools is turntable height and sight positioning. if you can get your body to be at a height and angle where you are comfortable enough to be in one position for extended periods, then the odds of a better set-up are increased.
many times i see turntables on low racks or crowded into corners and i wonder just how meticulously those tt’s can be set up?
tools are only as good as our ability to use them. setting up an arm or cartridge should be a pleasure and satisfying. or our results will be diminished.