I tried one briefly. Didnt care for the design. The compensator is a screw type, not a ramp type. I figured with a built motor, it would wear in really short order...I welded it and ran a sold for a while...Have a stock back in mine now...If your keeps coming loose, check the stack height and make sure the nuts not bottoming out. Clean threads good, use red locktite and let set for a day or 2 before adding oil or running.

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Hillside Cycle custom head work
S/E 4.375 forged crank Darkhorsed
Axtell 117 cyls and pistons
Mikuni HSR48
S+S Super D manifold
Black Boarzilla
Wood's TW9BG cams and KF325 filter