If the barrel has a nice polish and isn't bent it'll work fine lol. The longer control bore is nice though.
As for the ASA problems I have no idea either. Mine worked fine. I guess with some brands of tanks you may need to adjust the pin depressor setting. That's the point of it being adjustable though lol.
ETEK 3LT, with 14" Ti boomstick and cure 3 + bolt F/S
Vanguard creed eyes, membrane, bolt pin, detents, gaskets, schraders, orings and more F/s[/color]
Old school angel poppets/cup seals(LCD and A4/speed), spring detents(not sure which models) F/S