I there anyone out there that knows whey certain aircraft require excessive up-trim while trying to maintain level flight in FS9. I have the FFX 737-200 and when watching the aircraft in external view at 31,000ft I've noticed the horizontal stabilizer pitched at an angle that would cause most other aircraft to stall out do to an excessive nose up pitch angle. The FFX bird needs this to maintain level flight. The rest of the fuselage has the correct pitch angle in level flight, it just seems the trim setting is off. So how does one correct the trim setting of an aircraft so the correct amount of trim is used in flight versus this unrealistic pitch angle I'm seeing from the horizontal stabilizers???

Not sure if FS is this well modelled but at FL310 the aircraft will best be flown at about 1.32 x Vimd (just behind the drag curve) as that is the most efficient speed so long as you are at a hieght that requires about 90% N1 to maintain that speed (90% N1 is roughly the most efficient engine speed). To achieve that the FMC will probably set cruise at about 0.74-0.78 mach (very much depends though). At this speed the lift pressure moves back along the wing and causes a phenomenon called "mach tuck" - the aircraft pitches nose down. Autopilot systems counter this by providing a more downward force on the tail by changing the angle of incidence of the tail-plane.If FS models this I am impressed.

I believe FS models this but I think you should download and try the FFX 737 and see extreme trim problem I'm talking about...