I have one of these babys in my hangar. It has an OS 46 ax with a pipe. I lost one due to the elevator clevis pin snapping clean off. Nosed in destroying the fuse but wing survived. Went straight out and got another one. Did not use standard clevis but a heavy duty one. Now I have a spare wing. I put a 12oz tank in it as the tank supplied was a bit small. I had to remove a small part of the front wing to fit the tank but it did not affect the plane (except for longer flight times). I also moved the CG back an inch after careful testing. Very good plane. I use the flaperons when I have a deadstick and I have to slow her up quickly. Love it!