Herman, sometimes, if you have a TT that comes without an arm, and an arm was installed on it, the pivot-to-spindle distance is not adjusted correctly. Thus, if you used a single-point cartridge alignment guage, you would not know about this. The result would be cart misalignment in areas other than where the alignment guage was set. The way to do this is to consult the arm manual for the proper spindle-to-pivot distance and check it with a ruler. It doesn't have to be very far off to cause problems. Also, use a 2-point cartridge alignment guage for making the most accurate cartridge alignment. The 2-point guage will also show you if the spindle-to-pivot distance is wrong, because you wouldn't be able to get 2-point alignment if it is off.
