With that said are you saying the 582 at 65hp is not enough as well, I was judging the X-Air with the flightstar that flies pretty good with a 503 ,I understand they are different but they do have a lot in common. The engine set up I was going to use was off my Flightstar but if there will be a problem I better rethink it,I do have a mod 99 582 that I could use. Any thoughts are appreciated?.Thanks?