I've got a belt-drive turntable which has very slight but regular speed (and thus pitch) fluctuations and was wondering if there's a way to really lock down the motor speed. I checked the voltage the motor is getting and it's pretty darn steady; my scope showed it fluctuating no more than 0.1Hz around 60Hz. Any ideas? Or is this just something you have to deal with when you have a cheap belt-drive turntable?