Been using the rubber bonded washers on the cowl and canopy and haven't had one back out yet,,

Had a short flight yesterday with the new set up, that little change of assembly did make a difference. the flight was short because I rigged the tank wrong and had a dead stick,, all went fine, but when I got in the pitts I saw a broken wire brace,, I need to redo them before I fly it again.

Yes the stock muffler body will stick out a touch, I bought a j-tech wrap around,, I might change it out and install the new cowl