I've got the original sleeve and a wd40 tin in mines and its shooting great.
Thinking of getting a V-glide fitted though, been out with the rimfire alot lately and can't miss within 70 yards, much prefer the challenge from my springer.
Been practicing the artillary hold and its improving my shooting instead of trying to hug my gun to bits.
Its shooting about 22 ft/lbs, zeroed at 30 yards and been knocking the centres out of targets lately, really chuffed with it.
CW.