Ok man I will give it a try.

ok... in the dark I've had a good look. Its hard to tell, as I'm not sure what to look for or what's not right.

As I slowley speed them up they seem to move in a 'U' shape... very slowey. Imagine writing loads of uuuuuuuuu on a bit of paper, the speed sort of moves like that.

Ok that makes no sense, but basically they don't move (well apart from on the spot) when pitch is at '0'. From there to +8% they centre dots move and get fast as the pitch does, but always jumbling in that 'u' shape, I guess to the motion of the deck.

Probs best I record it using my digital camera, and upload a movie shot of it.

Thanks for giving it a go.