Meph - so are you the one who wouldn't let Hans bring his home from EMR ?
I'd be interested in your opinions and comments on the illusion. either post it here in the AM forum or drop me a line directly at email@example.com
anyways, the new style SP freak back usually work if you remove the gem sticker. depends on SP's quality control on that day. I've got 2 here that vary .015 on outside diameter. while that's not much we at AM keep our tolerances ALOT tighter ( .0001 )