There could be an orientation or rotation value that is not set to their default values. Check on this. Also, try converting the text to editable text – do this by selecting the layer and choosing Layer>Convert to Editable Text – see if this helps.
I would also just try animating the X-rotation to see if it looks fine, regardless of the 3D axis arrows.
Alternatively, you can upload your AEP for myself or someone else to take a look.
Cheers
RoRK
Intensive mocha & AE Training in Singapore and Other Dangerous Locations
Imagineer Systems (mocha) Certified Instructor
& Adobe After Effects CS6 ACE/ACI