I am happy to have the PTFE spacers.
On a side note, I did a size compare between the diameter of my SM and the ProVari. Looks like the base of the GTUS is the same diameter of the SM... with the adjustable center pin on the SM, and the solid 510 connection on the GTUS, being able to use a T-tank for easy switch out at work, I am starting to get a little excited about this atty!!!
Nope, SM is smaller diameter. Assembled my buds now its mine up on the surgery table.