Peddy please except my apologies, what a twit. Old age I am afraid, AIR repeat AIR 1000 lines, yes air leaking. The confusion was that the same leak, of UMM Co2, happens with the Webley and Scholfield! New but non sealing 'Breach' seals. Just as an add on, the Webley and Scholfield seals have a channel cut from the hole in the centre to the bottom edge ( 6 O/clock.). What is that all about?
Cheers.
Geoff.