I have a Series III Sapphire and am having problems with varying speed. First, the 33 speed control pot is very sensitive and does not behave the way you would expect it to - slow down slightly if turned left, speed up if turned right. Moving it slightly can lead to massive slow down, but moving it hard to the left can sometimes left to it speeding back up again. Second, the speed gets out of adjustment fairly easily. It can be in between listening sessions or it can even be affected by running a discwasher brush over an album aggressively enough to where it slows the platter slightly. I'm not sure if cleaning that pot is a DIY endeavor. Or if the pot may need replacement. I've reached out to SOTA in the past, but sending them the table seems like it will be a $1000+ affair. If anyone is familiar with these and has any experience to share, I thank you in advance.