Barrel extension problems

[Scoots]

To make a long story somewhat short, I brought in my AR to a dealer and we tried several bolts to find one that would headspace correctly - no luck. So I went back home and carefully examined the barrel and all components. The barrel's gas port is off several degrees from Top Dead Center with the upper receiver (funny I never noticed that )

To get the gas port to TDC the barrel extension will have to be tightened a few degrees, and that just may solve my headspace problems. What do you think? If the barrel extension can be corrected I will have to have someone do it for me - if that can be done. What do you think?

Next month will make a year on this project. It's been one headache after another. If I can't get this barrel extension problem corrected I'm going to start with a whole new barrel!!!