Direct Drive Turntable plays slightly too fast


I have a nice realistic turntable that is a direct drive. I just took it out of storage in its original box, i might add, but I just noticed after reading the instructions that the stobe shows it plays slightly too fast.

I adjust the speed knob all the way it will go in the slow position, but ever so slightly the strobe shows the platter moving a hairs length clockwise - or too fast.

What can I do. Is the speed knob a potentiometer? Should I replace it? Can I add a 100 ohm or smaller resister to the potentiometer? Is it possible to pot oxidized?

ideads please?
wasimmer
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Yes it's possible the pot is oxydized, this is a common problem with old DDs. Just spray it with contact cleaner or Deoxit, turn it repeatedly working it in, and it should be fine. Good luck.
If it's been sitting a long time, the pot may be oxidized. Sometimes, but not always, twisting the control back and forth rapidly 30 or 40 times will improve things.