Need help setting overhang on the Technics SL-1200

Recently I picked up a Technics SL-1200 and have mounted a Shure M97XE cartridge. I am curious if the white plastic overhang guage that comes with the SL-1200 is truely accurate; my ears seem to tell me the cartridge sounds better moved further out toward the tip of the headshell (presently I have it out as far as it goes). Also I am wondering what the ideal tracking force for the M97 is and how high the rear of the arm should be set for the VTA (between 0mm and 6mm). Your thoughts would be appreciated.