Gary: You said a 15 year old "gas" powered plane. Is it really gasoline powered or "glow fuel" powered? Glow fuel is Methanol with Nitro-Methane and a blend oils, usually 20%. There is a huge difference. Gasloline powered models are usually pretty large in size. Note.. usually.. because there are smaller gasoline powered engines out there, but not 15 years old.

Since you did say Tower 40, then this is a glow powered plane. Semantics, but it usually helps to get the terms right so we can offer help that goes in the right direction. By the way, the Tower Trainer 40 is one of the good-guys.... well, most of the trainers out are good guys.. they are all pretty good in their own way, with few exceptions.

Do you know what engine is on that plane? How about your radio system?

By the way, my niece just graduated from Harvard with her Ph.D. She was on a full scholarship for her chosen program. Not MIT, but Ivy League none the less. We're pretty proud of her.

CGr.