Hi,
I realize that this is a 3 month+ blog but I can help you with your dilemma. I have a PD-270 that had the same problem. If you open up the bottom you will see a small electronic board under to pots. On the board there are two or three small spiral screw adjustments. They control the pot adjustments. Play the turntable on 33 and turn the screws one at a time very carefully to see which one brings you to steady. It is actually quite easy. You should set the pots in the middle so you can fudge each way.
Good Luck,
Joe
I realize that this is a 3 month+ blog but I can help you with your dilemma. I have a PD-270 that had the same problem. If you open up the bottom you will see a small electronic board under to pots. On the board there are two or three small spiral screw adjustments. They control the pot adjustments. Play the turntable on 33 and turn the screws one at a time very carefully to see which one brings you to steady. It is actually quite easy. You should set the pots in the middle so you can fudge each way.
Good Luck,
Joe