I may be onto a breakthrough here (for me anyhow.. I’m way out of my league dealing with these images and alpha channels and all that)…
I was able to edit the windshield texture file for the TBM. I only did half of it but you can see the difference (this is a 2D screenshot, but same result in VR)… more tinkering to be done…
EDIT - A couple VR screenshots… copilot side (default)
Pilot side (“tinted”)


