I have a rubber band you could borrow.

Theve even thoughtfully cut a hole in the fire wall and put a brace accross the back of the wing seat.

I found this set up really good, and cheap to run, but Ihad to add a lot of lead to the nose to ballance and I'm very concerned about the loadings on the wing.

If your areal hot dog you could use 2 bands together, easier that reboring a glow motor.

sj.