Music Hall mmf-7 spins faster


I have a Music Hall mmf-7 turntable (EAR 834P phono preamp) and it spins faster than normal. I bought a new motor and a new belt from Roy Hall, but it didn't change a thing. I borrowed my friends' motor (he has an mmf-7.1): no change... I even bought a Pro-Ject Speed Box (on Roy Hall's advice): it still spins faster. My cartridge is a Sumiko Blackbird. I really don't know what much else to do: any ideas? Did someone run into this problem?

I am desperate.
lrmellon
No, I didn't. Thanks for letting me know. I will have to pass however. The VPI purchase will come some time in the second quarter of 2010 (at the latest), preferably a ScoutMaster. Thanks again...
Finally, some closure: I have both turntables (mmf-7 and mmf-7.1) spinning correctly now. After a lot of tweaking, I finally put a little (toilet) paper on the small rod on top of the motor before easing the pulley, giving it a snug fit. Since then, no more speed problems. It even works perfectly with the Pro-Ject Speed Box II now. In fact, there was no adjustment screw (and no place to insert one) at the base of the motor pulley, thus making it going either too fast (or too slow): "élémentaire, mon cher Watson!" as the French would say...
Wow! Seems counter-intuitive, though, that a loose fit between the rod and the pulley would result in too fast a speed. Too slow a speed, or an erratic speed, certainly would be understandable. In any event, glad it's solved!

Regards,
-- Al
Actually, it was too fast at first (don't ask me how or why); then, lately, it almost wasn't turning at all: that's what called my attention on the rod and the pulley. I guess I somehow got lost into the measuring and the swapping of parts between the 2 units.

And, yes, I am so glad it's solved! I can now give the mmf-7 to my daughter (her birthday is in about 2 weeks), keep the mmf-7.1 and think about my VPI purchase while I listen to some fine LP's...