How to switch hammer spring on the Edgun Leshiy?

Maybe he is experiencing what I have with my Leshiy. Every so often, I have to add a few clicks to my hammer strike to maintain my target velocity. I just added 3 clicks today to get it back to where it was a couple months ago. I never leave the gun cocked either. Figure I am going to run out of adjustment some day.

Is there any problem with the spring if we leave the gun cocked?