Terry, are you speaking of the RTOM Moongel drumhead damping pads? They are pretty subtle on heads (I’ve used small cotton pads taped onto mine---long used by studio drummers---for many years), but never tried them on a tonearm. Sounds promising. Better than Sorbothane? I’ve read that the Moongel pads are used by some for stylus cleaning, a scary idea for a Decca/London pickup user!
Coincidently, I have become aware of and interested in the Trans-Fi Terminator arm myself. Have you heard it in comparison with the Eminent Technology air bearing arm? That arm is still available on a limited basis, but now costs $4500! Used 2.0’s can occasionally be found for under a grand, however. I’ve seen and heard that arm on many Oracle Delphi’s and VPI’s (favorite combinations of the late Brooks Berdan, whose shop I spent a lot of time in), but the designer of the Terminator shows a London Super Gold, my favorite pickup, mounted on his arm on the T-F website. An arm designed and built by a London user has GOT to be something special! Some of the Decca/London enthusiasts on the Lenco Users Forum swear by the arm for those cartridges. The most exciting arm in years, and only $1000!