nope, the 40 was underpowered and used up all 500 feet of runway to get of the gound, so I replaced it with the 46 and it developed some kind of leak and never really ran right anyway. I have a 46 and 55 AX now. they are both awesome. OS makes such great engines, I wonder what they were thinking with the LA line? sorry to offend anyone with my dislike of the LA series. Those two engines set my training phase back quite a few months.