I too have been instructing a student with a Nexstar. First thing we did was to unhook the AFS. Too me, the plane seems harder to fly than most other trainers, e.g. Superstar, LT-40, etc. It does slow down for landing, but turns seem to be very mushy -- due to the airbrakes and wing extensions I think. Just does not seem to favor the learning of precision in control by new people. Would be interested in hearing the views of other instructors on the Nexstar -- apart from the sim (which I very much value) and the AFS (which I consider worthless).