When those anti-vibration plates first came out, I put one from Carberry on my UCE just to see what it would do.
My bike never vibarted much before that, and I had no problem with the minimal vibes it did have, which seemed to manifest in the handlebars.
After the plate was installed, the vibration moved out of the handle bars, and down to the foot pegs which my feet did not like!
When riding with the plate, my bike also felt like something was missing... It felt noticibly different, and just kept bugging me. It wasn't long before I pulled it back off. Instantly my bike felt like my own again, and I fell right back in love with it!
What I remember (UCE mentor and fellow "Long Stroker") Gas House Gorilla saying about those plates, which was also posted here on this forum, is that the bearings were not rated for the load a UCE puts on them.
I don't recall the specifics, but their strength or reliability was technically marginal as per the numbers which are stamped into them.
That may have changed by now, but I would reccomend looking into it. That may be how the ebay ones are lowering the cost too, cheaper bearing?
As long as that bearing will hold up, and you are so inclined, try one out. You might like it?
In my case, it was a mistake, a failed experiment which dampened the spark of love I had for Bholenath. After removing it, I apologised to Bhole
and promised to never do it again.