Floyd Rose guys.......

[Ayrton]

Yes, the Schaller arm is the correct one.

If you are happy with the feel, and just the collar is coming loose, wrap the threads a couple times with Teflon tape.

Might be called plumbers tape as well.

 

[Wizard of Ozz]

I don't like the feel or lack of stability of the FR-2000 MIK units. The play, act, and feel cheap. Sorry. That's my opinion. Give me a good old early to mid 1980s OFR any day. Even the current Schaller MIG is a way better built and more stable unit.

I also don't like the current Gotoh MIJ units much either. The pop-in arms just feel wobbly and cheap. Don't like the overall feel/footprint of the unit either. Especially when muting chords. Just plays, looks, and feels cheap... for lack of a better description.