Quote Originally Posted by TonyL View Post
I was just about to ask how long the spring has been in there and whether, if it was a recent addition, it was getting coil bound? But maybe not. Is the trigger mechanism gunked up? Have any foreign bodies got in there, say between the bearing surface of the guide and spring and also at the piston end of the spring?

P.S....You haven't recently switched stocks have you?

Spring has been in about four years, but it's been used heavily this year.
Everything is absolutely clean.
Nope same old stock.

Going to check the guide rod hasn't moved forward in the piston too, just in case.