I've got an Alpha 60 with the Evolution .61 and it's been one of the best, most reliable .61's I've had. Fires right up on a hand start - no starter required, runs very strong and never misses a beat. I did remove the limiter pins and do a proper run-in before I flew it - on flight on the 3-blade just for kicks to see how poorly it preformed then switched over to a 12 X 6. After 11 flights it hit the true break-in point where I had to reset the needles and haven't had to touch them since.

Hogflyer