Blimey have I just entered a parallel universe a good mention of the renowned Airsporter, with out hint of HW anywhere
Well done chaps I'm proud of you, especially you Tony.
By the way not all RB2's had the port restricter screw, the two standard models I've had in the past didn't have them but my Stutzen did and I believe the .25 calibre models did as well.
Enjoy and respect
Pete