Just fitted my 110 barreled action into my new duramaxx. I had to widen the left side of channel next to the recoil lug to get the barrel to FF (instead of rubbing a bit on the right side) but all is good now with that. The problem I'm having occurs when I try to tighten the rear action screw (inserted through the trigger guard). Without the trigger guard, I can tighten the action screw all the way and everything functions just fine. However, the trigger guard (factory) must be rubbing on the trigger somewhere because once it's tightened up, cycling the bolt causes the trigger/sear/hammer/something to release and thus a dry fire. It's pretty strange. No problem if I don't tighten the action screw...and thus don't snug up the trigger guard. Should I remove some material from the top of the trigger guard? I have not drilled/installed the rear screw for the trigger guard yet.

Thanks!
MEC