I just managed to kill the simulated F-117 at the Asuluk range. It seems that the best technique is to fire missiles with T/T guidance and the radio fuse switched OFF. I think the target being stealthy makes it very difficult for the radio fuse to detect it. Also because it is not possible to track the F-117 until its quite close, very often its just out of parameters when missiles are launched. T/T guided missiles appear to handle lock-on after launch much better than the other two guidance methods. 'K' and 'YNP' tend to go off track and not guide correctly if launched under similar circumstances.