DA engines do not stink, after talking to DA at the toledo show, you can run one of these engines til you have a problem, they are lifetime warranty items, so just run it was what they said. you can lean the low end to remove the bog and choking going on, if you like, or you could send it back and they will do the mod to it for free.
Pound for pound there is no better motor for the money, no matter what is slathered on this forum, DA makes and services the best engine in the RC community.

I would not hesitate to order a new one, mind you they are backlogged about 6 weeks.