Problem solved. Found a great article online about bolt cleaning at :
I took the bolt apart and thoroughly cleaned and then oiled. Fired 20 primed cases and they all went off.
When I first pulled the bolt apart it was very difficult and took a lot of effort to move and pull the sear back to rotate the firing pin for removal. Thought it seemed odd since I have seen this done in online videos with boot laces and pushing down on the edge of a bench. Now with everything cleaned thorougly the effort to pull the sear back is much lighter and easier to do. The snap sound when firing the rifle is even louder and more crisp. Sounds like the remington bolts need extra attention to cleaning and maybe the PTG bolt due to tighter tolerances.
One question, what high pressure grease should be used on the cocking cam?