Haha, don't worry, the video is good enough.
The bad news is that I could not reproduce your problem. I did try TIR with X-plane 11 latest release (rc1 I think...) yesterday, and it worked very smoothly and very efficiently, with many different aircraft including C172 and Kin Air C90. I could place my head behind the seat, of course, if I did it on purpose.
It is always quite long and difficult to adjust the hat on the head for a good result and for a clean rotation in every direction, but once it is done, everything is fine.
One more thing : I previously said that you could probably move the POV with assigned keys in X-plane, but this appears to be wrong.
Have you tried to adjust the POV in TIR software? I haven't tried that yet.