40 years a LAME, Line. Full Mech licence with Avionic approvals (REI) 737-1-200. 737-3-4-500. 737 -8-900. Airbus A320 and not forgetting a million years ago, the F27. All the associated engines and APU,s of course. Annual Company Sim checks for engine runs and failures up to throwing a blade, followed by a few hours flying. Etops/Erops service Eng across the Pacific, hundreds of hours sitting in cockpits asking annoying questions!
I mention this not to show off, well maybe a bit, but to say this. The IXEG 737 works just like the real thing and flys beautifully. It is comfortably my favorite airliner in X plane. Because of this when XP12 was released I transferred a copy of it (that was tuned for XP V11) into XP12. That didn't work and I forgot about it.
Earlier today I went to XP12/Aircraft/X-Aviation......... and found both versions of the 737. I removed the V11 version and bingo all was OK. What was happening was that XP12 was loading the Classic not the Classic plus.
Thanks for your help, and thanks for the great plane.