I have found the same with Garrard wheels sometimes they don't respond to refacing I assume the rubber has degraded throughout not just the edge. Sometimes there are minute cracks all around the circumference that definitely writes them off..
I have been lucky and managed to find good second hand replacements but otherwise I think there are firms that can recondition them ?
On stubborn decks that still slow down when auto changing even with a good idler and a cleaned and lubricated mechanism roughing up the inside rim of the turntable with course paper gives them that extra little bit of grip. sometimes needs must...
Rich