I don't have a problem with my blaster chamber. I bolt the chamber and the head pipe together and slide them in. I can have the pipe out and back in in under 10 minutes. The only problem I have is that the ADA cylinder I have won't let me use a top lord mount and if you slam in to the bottom you will jar the pipe loose from the coupler. But my new flywheel cover bracket should eliminate that since I am going with 3/16 stainless. There should be no flex there.
I dented mine just enough that it clears the tank and the hull. Just take your time use a 2 pound ball peen hammer and slowly massage the pipe around the tank and hull.