Had a set of Duncan Mod Spacers and a regular (non-GT) Cold Fusion yoyo.
Cold Fusion is not on the list of throws that the mod spacers would work with, but the Bumble Bee is, so I thought I would give it a try. Really didn’t hold out much hope, as I wondered how the plastic spacers would do against a metal body.
Worked great! So now, from a $25 Cold Fusion I got here on the BST section, I’ve got an “almost” CFGT!