I have two DA 50s, my first one has serial #0015, I had such good luck with it a year later I bought another #877. Like the previous post suggest after taking off raise the idle about 400 or 500. Mine idles around 1550, so in the air I have it turning around 2K. If you have a 9C Futaba its easy to do.

My second 50 did go thru a stage of dieing if I turned it to hard at the end of runway or if the landing was a little rough. This went away after about the third gallon of gas. I will admit you can hear it stumble just slightly when it pops into the first rotation of a blender, but it never has quit.

Also, at 4 gallons I went ahead and switched it over to 100:1 Amsoil, slightly adjusted the needles again and could tell instantly it ran smoother.

Dont give up on it, you will get there.

And if they ever come out with the 75, the checks in the mail.

Gary