In the short time I've owned this amazing tt, I noticed the set screws that level my motor have quite a bit of play. This is a major source of vibration.
My current tt platform is a Symposium Ultra. When I would set the Merlin to 45rpm, I'd get an audible noise.
My solution is to wrap Teflon tape around them. I start at the bottom in the direction that will tighten the tape as the screws are turned and use no more than 2 & 1/2 rotations as I gradually rise up the screw, stopping at half way up.
I'm surprised that this kind of issue is had for Townshend owners, luckily, there is a easy, LOW cost solution.
Cheers.