Hello
My mate at work had one (think i still have a pic somewhere), he sold it for £250 but it was leaking...
I would have snatched his arm off had i not been skint at the time
I have two normal Huntsman rifles, one of which leaked, it was dead easy to strip and reface the valve (it still holds air forever now )
Does yours have tha black hard sponge fitter where your cheek sits on the breech/receiver/bolt area (sorry but i can't think what it's called )
John