Got it and worked fine. I noticed that the factory barrel nut was not very tight. I guessed it came off with no more than 20 ft/lb of torque. Kind of got my attention. I installed the Troy to 40 ft/lb and got good timing there.
Having a heck of a time removing the gas tube drift pin from the gas block. Bending all my punches! Any tricks to that? I'm going left to right, tried pen. oil, heat and still no movement.