Yeah.. I had also never been able to hold this airplane in a high alpha harrier w/o a lot of wing rock and after putting this prop on it was easy. I brought it down in harrier to about 10 ft.. circled around the runway.. came back.. was going to land it in harrier, but, over shot the runway.. so I just gased it up a bit and let it hover at the end of the runway. All 10 ft off the ground and coming from someone who could not hold a hover very well or harrier 10 minutes before I put the prop on. Crashed the plane after 3 flights like this b/c the muffler came off in an elevator. I just wish someone else would try this to see if it was a fluke. I cannot figure out what would cause such a difference, but, I do know that was the only change I made. Anyways.. I expect to have it back up in about 2 weeks. Work had just gotten nutz for a while and I had a new baby girl and I could not work with my planes for about 4 months!!!