LOL... yes I sent mine in. They very promptly replaced it with a brand new engine..... which wouldn't run consistently either. I know you are all going to say that it was something that I was doing wrong. I wasted half a flying season messing with those two engines and had all the experts at my field helping. At some point you say to yourself this is stupid and just move on, which is what I did.

I have had zero problems with my Enya, OS, Saito and Thunder Tiger engines in 10 years of flying.

BTW, mine were 46XLS engines.