VPI Rim Drive vibrations


I have VPI SSM with RIM drive and SDS. The issue I'm having is a vibration being transferred from rim to the desk/platter. As the result tonarm wobbles a little bit in azimuth plane.
I tried to replace the brownish rim belt, change contact force/distance between the drive and the platter, and reinstall the belt - the vibration still there (exactly one wobble per rim's full revolution - 360 degrees).

The speed stability is very good though - have checked it with KAB Speed Strobe.

Any ideas how to resolve the issue?

Thanks a lot!
krell303
Hiendmuse, looks like I'm putting rimdrive too close to the table - it stops almoust instantly. But - do not have any tonarm wobbles anymore. Will try to reajust over the weekend, thanks!
Krell, I put a small red sticky dot on the side of the center clamp. you can also put one on the side of the platter to count the number of revolutions. You do NOT want the tonearm to wobble which is GOOD. Do not adjust so the tonearm wobbles, adjust it so the platter stops after about 1 revolution or slightly more. It only takes minute changes in moving motor. Make sure motor is centered front and back between the side of the table and the gap between motor and side of table is equidistant. Your vibration problems should go away.
I've only just come to this exchange - so you may all have gone away by now...
I've read it all because it addresses many of the problems I've had with rim drive - and I'll try the suggestions, particularly Stringreen, Thanks.
One thing I don't understand. Various people have put various things under the motor assembly. It isn't clear if they bypass the stock feet and rest them on the underside of the motor casing or not. I can only raise the motor assembly a very tiny amount before the rim drive is so high it prevents my using the ring clamp.
What am I not understanding ?

Hello...... Anyone still there......
Could this problem occur with a VPI Traveler on a rigid wall rack and shelf?

TIA!
The VPI Traveler table is a belt drive table. The issue being discussed here converns VPI's rim drive.