I have plugged the opening in the rear of a muffler and have drilled a hole near the bottom of the muffler into which I will insert a 1" section of exhaust pipe that was cut off a Slimline sport muffler. This will direct the slime down and away from the airplane. My question is concerning what I should do to secure the pipe in the muffler. It is a nice snug fit, but the pipe will enter the muffler body as far as necessary. In a perfect world, I would find someone who welds aluminum and have him do this, but short of that, what can I use to secure the pipe? Liquid steel, JB Weld, ???????????? What have some of you found works best aluminum to aluminum?