Hi guys, just some feedback from the odonnell 77t, started off yesterday with the reds plug that came with the engine, started leaning out the engine with breakin done, switched to the 77t and the engine felt a bit more responsive, went through about four tanks with the odonnell and switched back to the reds plug, engine felt lazy on bottom, all this without changing the tune, so im gona stick with the 77t in the engine.