KneelingAtlas - I tried the side ports in the first chamber, then once I noticed a difference I added the ports in the second chamber and noticed a bigger difference then I dropped the last chamber down. All in all it was a weeks worth between cuts and tests. I may set my crown back and open the first chamber like you did. Why did you weld the last chamber at the top? worried about strength?
Steel1212 - my biggest problem was the recoil was stabbing me with the mag catch button but I didn't want to shorten it and like you said get the gun as flat as possible.