I have a TEAC A-1250 that plays a bit slow on 7.5 IPS. I can tell by playing a commercially recorded Beatles tape from Capitol. I know what the Beatles are supposed to sound like and this is slow. Not really slow, just a little. Playback on another deck is fine. I have checked the 50 / 60 Hertz switch and belt position, they are fine. I lubricated the capstan and reel motors using those little tubes and sewing machine oil. Interestingly enough the 3 3/4 IPS seems OK. I played another commercially recorded tape and that sounds OK. Not sure where to go next. Didn't want to play with pinch roller tension, (yet). Everything else seems to work fine. Motor start / run cap? Let me know your thoughts.