Wow, thanks all who have enlightened me on the "Nav kit"! Especially Dougie M. As an ex GE I can't speak for those triangular (and funny) charts you seem to have a grasp of, but I remember doing a lot of box changes to keep the Nav happy. Ahhh, at least it kept me awake eh ?
2y's UR, 2y's UB, ICUR 2 Y's 4 me !
Smudge
