I had used 1/2 or 3/4 inch angle stock behind my fire wall and I may have used tooth picks going through the sides of the fuse and fire wall??? Can't remember if I used the picks or not. It's A big plane but it doesn't take A lot to get it off the ground and stay in the air. Only problem was landing, it wanted to float right by me even with the flaps down.
That plane is the most fun when the wind comes up, you can get it to fly backwards.
