Sorry to renew an old topic, but I have a 6300 as well. It came with an extra Cartridge holder and the dust cover is in decent albeit scratched shape. I was planning on putting it into action in place of my DUAL 1229 but when I powered the 6300 up, the speed was a bit fast, the strobe showed a bit speedy, so I turned the speed adjustment knob on the 33rpm and it slowed down to nothing, then got all irrational on the speed altogether. What gives? Traveling and calling around town (I live in central Oklahoma, USA) and still haven't found a person who works on these. Any suggestions? Is there a way I could calibrate it myself? Could it be the speed adjustment pot? Otherwise the turntable sounds great. The frame is in nice shape, too:scratch2:. BTW I'm new here.. Looks like a wonderful place, and I'm starting to get back into vinyl, so I'll be posting a bit..