I've flown my Twinstar over 130 flights with LA 40's and all I can say is that Hobbico got this thing completely right from a handling standpoint. Its a blast to fly and lands like a trainer. I really have flown the covering off this baby. Literally! I've lost most of the trim off the tail and the side of the fusalage. Just so much oil coming off the upswept mufflers blowing back on the tail. I was going to recover, but honestly I think its faster and easier to just buy a fresh airframe for next year and sell this to some one who wants to screw around with it. It's still sound other then the cosmetics.