This could not be the breech seal. It is likely involved with the valve or the linkage from the valve to the trigger. It is time for a tear down.
This could not be the breech seal. It is likely involved with the valve or the linkage from the valve to the trigger. It is time for a tear down.
It was the valve pin that had moved which caused the problem of not firing. Punching the pin back to the correct position and re-tightening the set screw solved the problem.
That's great to follow up with your solution, I could well help someone else down the line.
Too many guns, or not enough time?