Ideas for lube on UUC poly RTABs.

Guys, I'm at the end of my rope here. I've had my UUC urethane RTABs on my car for a year or so. I've had to remove them and re-lube them about 6 times because the noise is so increidbly unbearable. I'm getting a little miffed. I've used Energy Suspension poly bushing grease, Mobil 1 grease, white lithium grease. All the same results. I was told to try some brake no-squeal. I'm going to give that a try. Any other ideas? Alignment is correct, torque is correct. Lube was applied liberally, but not overkill, on all surfaces.