I've been breaking mine in a tank or two at a time as I would get a chance to over the last couple of weeks since I bought it. I've run about a Liter of fuel through it. Last night I ran it on a track for the first time and I have to say that I was pleasantly surprised. It's still rich on the bottom but it seemed plenty fast once it would clean out. I think this is gonna make a pretty decent practice/club race type engine.

Mine is paired with a DYN053 pipe, like the previous poster said it makes a nice combo for under $200. The only question now is how long will it last? I'll probably swap the rod out after a gallon or so and then we'll see how long she goes.