I just bought a lt-40 arf airplane!!! I am right now trying to install the jr f-400 radio I have and the engine. sleeth hobbies fixed me up!! the plane came pre-made and just needs the radio installed and engine. Im so excited!!!! but im wodering, have any others put a small wheel or peice of metal wire at the back to help safe guard against to much flare or to much elevator on take off?? I was just thinking it when I was lookin it over at the store.