Hello, I recently acquired two 1/2", 8 track machines - a Tascam TSR-8 and a Tascam 38. Both are in very good condition. I own a de-magnetizer and I know the heads will have to be de-magnetized occasionally as well as cleaning of the metal and rubber moving parts in the tape path. However I know nothing about aligning and calibrating these machines as far as adjusting azimuth, running calibration tones, oiling motors, ect. Can anyone recommend a place where I can buy an alignment tape? Also could anyone point me in the direction where I could maybe find a good tutorial online that explains the steps in calibrating and aligning machines like these? Thanks everyone.