I had been given a balsa Tiger Moth. I converted it to 2.4GHz and checked the operation of all the control surfaces rigorously. Then I set the throttle linkage to the 4 stroke engine. I took the plane into the garage and started the engine, tick over a bit fast but the throttle cut working fine. Now time for the full beans and set the mixture; the whole engine mount/bulkhead and tank mount came out and fortunately the engine cut when the servo link snapped. My Corsair was infront of it, a near miss.