Ah well, Pete, the very simple answer is that I had no 35 seals on the shelf when I built it up, so I simply bunged in a 2 pence O ring.
I could have made the one hour trip to Knibbs' and bought one for £11, but my trips to Knibbs usually end up costing me over £200 by the time I've finished buying bits and bobs, and then I normally end up spending the rest of the day shooting rimfires with my mate who lives next door to John.
Anyway the story of my O ringed 35 is on here :-
http://www.airgunbbs.com/showthread....10#post2931510
And believe it or not it was pictured in Aug 2010 edition of "Real Airgun Sport" magazine.
image.jpg
All the best Mick