Paul, if you want to find out your turntable’s potential I suggest buying a couple reissue LP’s from Music Direct, Elusive Disc or Acoustic Sounds. Look for quality audiophile labels like Mobile Fidelity or Analogue Productions and details like Mastered From Original Master Tapes & Pressed at RTI.
You should be able to find something to please your musical taste. They’ll cost you $35-$50 but will be virtually free of surface noise or warps. A couple swipes with a record brush is all that’s needed. If there’s an issue, these vendors have great customer service.