Managed to get an old Tascam TSR-8 off a friend's Dad fer free. However, reading the manual's section on head alignment sent me head reeling. Is it necessary to do all those complicated electronic adjustments re freq response, tape bias etc, or will repositioning the erase and repro head azimuths alone suffice? Can any experienced users out there help me with a step-by-step list of what to do? I NEED HELP!