I am not sure of the angle, or if you are using Track IR??? There is an intentional head tilt added to the default forward head position. This was due to the complaints of alpha testers at default FOV, not able to see instrument panel while in flight.
As Bustr stated, hitting the home key will give you the flat (no tilt) line of sight. If you have no problem with finding gauges, etc... (as when you have extended FOV greater than default 80) then you can save that head position for that aircraft with the F10 save head position key.
You may want to experiment with each type of vehicle individually before saving, as I can see arguments for both ways. You can even set a custom head tilt (greater or lesser) that is new with this version.
