OK, I have been watching this entire thread unfold from the sublime to the rediculous. I have a DA50 that has just finished it's break-in. Have maybe 4 or 5 gallon of fuel through it. I have been transitioning it from break-in to broken-in for about a gallon.

The engine is running like a top. I did have problems simular to those mentioned in this thread. Whether it is rings, porting, tight parts or whatever I don't know. What I do know is this engine puts out incredible power for its size.

I also know that during breakin you NEED to keep the idle high, at a point that will not allow the plane to stand still if you let go of it. If you do this it will not quit on you. If you try keeping the idle to low during breakin it will quit on you all day long. Sure it's a pain for about 3 gallons, but after that everything is fine. If it really bothers you on landing and you have a computer radio you can program idle-down so that once your landing is made you can flip to a lower idle.

My engine has now worked through this tendency and runs fine. If you are thinking about one of these please don't let some of the overreactions here sway you.