Well, for those who are interested, the mystery of the bad shooting AR was resolved today. What did I do? Dunno really. I screwed up on the direction of turning the front post, but this thing still shot terrible. The trigger activation nut is working fine. PAH-LEEEZ!
Over the weekend the front and rear sights were completely disassembled, inspected and reassembled. Guess what? Went to the range today and after a 12 round 50 yard sight in. The rifle put 60 rounds through a 1.5 inch hole dead center on the 10 ring at 100 yards. You could say that I fixed it. It would be nice to know what I did.
Thanks for the comments....trigger activation nut...good grief...