Hi
Another thing I have descovered is that the default 737 in FSX has a unralistic flight model. Generally the nose is too high and it is too powerfull.
I have found that the open sky 737 has a very accurate performance model.
But you need to have a fairly clean panel.cfg file for it to work in FSX, and if using this model your max trim needs to be +- 15 not 20.
I plan to finetune my configuration this week and post my findings.
Richard