recently I have been having a problem where the firing pin is not hitting the primer on the lightfield slug shell hard enough to engage the primer. A small dimple is being made on the shell but not with enough force to "fire" the primer? this gun is about 4 years old and has been my successful primary deer gun. the only thing that I can think of is that I added a trigger from sharp shooter supply 3-4 years ago which has been fine, but was the only modification I made to the gun. I'm considering putting the stock trigger back in If I can find it to see if it makes a difference. I doubt the spring on the firing pin is worn to the point where it doesn't create the force it needs to.

any thoughts or direction you guys can provide?