Anybody have UCAs with polyurethane bushings?

[Lamarsh]

I just installed a pair of Icon UCAs with the delta joint, which has poly bushings. Immediately I noticed better handling, but man are these poly bushings loud. I greased them prior to installing, and I'm going to hit them with a greasing on the zerk soon to see if that quiets them down.... but if I can't get them to quiet down I might have to switch back.

Anybody with poly bushings on UCAs have any tips to quiet them down?

Thanks