RE: Sig 4* question
Like everyone says, it is a great plane to fly. Stable in windy conditions and it goes where you point it. As indicated, just remember it is not self correcting. I have a OS91fs in mine and I really like flying it. Don't know if you have the kit or ARF, but mine is the ARF. Make sure you have a good seal on the tank stopper. Over time, mine shrunk and I got fuel inside of the tank area. I ended up putting in a Sullivan tank as the replacement.