Often the filler valve
Check with balloon or water
Often the filler valve
Check with balloon or water
I've done a concept rifle.
Which is the same set up I think.
Empty all air ,spanner on valve which unscrews cylinder end cap.
The difficult bit is getting the valve out of the cylinder end cap.
The valve has a square to put your spanner on but the end cap is round.
You need a vice.
Once done replace seals in valve or get new valve from Best fittings
Thanks Gingernut. As a hamfist, I just know I'd screw up, plus not certain that the filler is the culprit, so I'd rather not run the risk. Had a reply from Brocock today, sending it back to them for a full service & overhaul. Also enquired about the possibility of a different grip.
Me too!
But I thought I could always stop if it got silly.