OK officially solved
Ran this bird thru every possible abuse I cold give it (like the NGX before it) and it passed..
..finished off with LIMW to LSZS...all fine except decided against another silly descent landing so did my first divert to LOWI...INNSBRUCK! (ahhh memories of the 737 advanced tutorial...)
...adding WPs enroute i passed my final one before entering approach so had to add a direct to the STAR entry...then cut it short to save time...then of course ATC put me on 8 instead of the easy
26 RNAV approach...so once more added waypoint/another star....descent looked like an early mountain landing (done those FSX missions already) so pulled the altitude knob...YES of course
it leveled off
then back on approach with just the A/T to assist...sweet landing despite my heart rate at 150(!)
...marking this issue SOLVED now and once more a final thanks for all your patience...bizarre error for sure and I hope no one else gets it
Now I have the sweet choice of 737 vs MD-11 on future flights...AFTER of course Ive done my world tour with the MD...the manual tour is OFF!
RG