So after all I did to my F-15 (
http://www.rcuniverse.com/forum/fb.asp?m=8027650), I *finally* got a chance to test it today. The gyro, the Robart nose wheel, and the Tam's wheels and brakes were a good investment. The plane was actually a joy to take off now and it flew very well, as before - just like the JL one I flew.
The springs on the main landing gear are still too soft, so I'm going to put longer spacers inside the struts to compress them some more. The plane still tended to tip on landing in the cross wind and that caused it to "wheelbarrow" on two of the 6 flights I did. When I get that done, it should be just about finished.
Unfortunately, the engine quit on the last flight (ECU battery crapped out). The stab tips caught the ground on the deadstick landing and the stabs got flipped around 180 degrees - breaking the pivot mounts. A few hours work and they should be better than new...
Bob