.air file tutorials?

I'm trying to resurrect the gMax Mitsubishi MU-2B that was abandoned as a freeware aircraft when the group broke up. I've rebuilt Michael Verlin's FS98 panel to FS2002 specs and approximated the original panel layout very well. I've eliminated the loss of altitude during turns when the autopilot is on, but I haven't been able to tweak the ground handling using FSEdit to eliminate the "tippy" behavior when turning during taxi. Is anyone aware of any tutorials available on the use of either FSEdit or other .air file editors that might shed some light on how to attack this problem? I'm a rookie at this and need some direction. I've read the SDK and FSEdit help files.