Flew the F4 today. It lifted off very nicely, very little trim needed, nice and stable in the air, aileron response at factory recommended throws was very good. Unfortunately, I suffered a flame out before I really had time to get the feel of the Phantom. I was downwind, full of fuel and farily low ... I did make it back to the runway but the landing was heavy and I have a little repair work on one of the main landing gear mounts.

I am still diagnosing the problem, but it was not an air bubble.