Hi,
I can spare a few hours to do some testing for you.
Have done spin recovery training in a Cessna 150, though haven't flown one for thirty years.
But I do enjoy flight envelope testing, and have spun (or attempted to) and stalled lots of different aircraft types in P3D v4.
I have also done professional software development, and have done beta testing for Justflight.
Just wondering which aircraft you intend to spin? The T-38 has quite benign spin characteristics, generally requiring full outspin aileron which leads to an inverted spin which decays to spiral dive, given enough altitude. Not really a good candidate for creating a realistic spin model against.
None of the other aircraft are really spin candidates, though wouldn't mind giving it a go
Regards
Andy
PS, Set-up is Oculus Rift, Saitek X-65 and Pro-pedals.