Impact reg gone to H

Sounds like maybe the oring that cushions the hammer has been beat out and is no longer consistent 

I believe it is c 3

Bought last Sept. means it is less than one year old and still in warranty.

Send it to FXUSA and have them take a look at it. I thought my regulator was shot also on my Wildcat .25 and it turned out to be an o-ring. Ernest can tell you one way or the other. 1-866-639-0772

Tell whoever picks up the phone that you want to talk with Ernest and they will switch you over to him.