I have a delta 46-450 lathe with a reeves drive...It started producing a clunk at the same point on every rotation yesterday...any speed, with or without chuck or hand wheel...pulled the spindle and all looks fine...removed the belts and it will not make the sound....obviously because the drive is not under load...spinning the spindle with no belt is quiet...the center part of the reeves drive that goes back and forth was very hard to move back and forth so I lubricated the shaft and put the whole lathe back together again only to hear the exact same sound...I now have it pulled down to the reeves drive and noticed now that the drive pulley is moving easily there is some play in it if I move front and back ( in reference the the front and back of the lathe)...should there be lateral play? Is there a key underneath i cant see??? Any info would be greatly appreciated, Thank you so much!!!!!!!