Thanks JP - I'll check this all out again. Now that I think about it I might have the high speed adjustment wrong. I adjusted the controller stop just before it would hit the upper sheave. This might have caused the belt to be out to the edge on the bottom sheave.
I have been looking around for this problem but can't seem to find the answer. When using my SS 510 the last time I noticed that when dialing up to the high speed the RPM's seem very slow.
I found instructions on how to adjust the high speed and when doing so the RPM's are still not as ...