UPDATE / CONCLUSION : Never really saw or hear where exactly I went wrong but the gun does fire like a champ. When I picked it up from the gunsmith I called ahead 10 min & asked if he had a minute to show me what he did...without saying it he wanted me to just pay, pick it up and be gone despite being on site. He did agree to meet with me, I get there & he puts the gun between us on counter then went to unscrew the mag tube by hand, he previously mentioned that I had simply reasembled the action tube end incorectly not allowing the bolt to sit as forward as needed to let the hammer strike corectly. Mind you Ive been disassembling this gun for 3 or so years maybe 3-4k rds shot & dissembled after every 200 or so rds to clean the carbon & trash from piston / action area. He goes to remove the tube strugles and pouts then goes to find some pliers wich he never found, he quikly comented How these two parts were backward etc. Once I figured out that it was gona look like I always asemble it & since I was on my way to work I just paid and left. I could see thru the charging handle opening that it was striking as it should vs when I had left it so I know he did "something" I just didnt get to see what. My take away from this is , 60 bucks to get my favorite shotty going again was soooo worth it lol. And I will continue to clean after every outing, exept I will not fudge around with the safety togle. Side note I went thru 100rds of Win 1200 #7 Wallyworld universal 4pack today along with 125rds of Monarch 1350 #7 dovenclay like gangbusters not one malfunction minus one soft shoulder jam caused by me with the Win 1200. It was all about fast fire function testing today as the indoor range allows BEASTMODE shooting. Its where I go to get that warm fuzzy fealing from the 930 when it running like a champ *