Thanks Lifer, I understand your concern. This engine does have the later C2 carb. I have run it briefly and it seemed to do ok, but I have not spent the time to really get to know it, as it has been sitting on the shelf for awhile. If I could put it in an inexpensive ARF that I didn't have a lot of time or money invested in I think I could take a chance with it. I will seriously run the thing before I choose to use it though.