MandelBox Projection matrix incorrect for VR

[friken]

I know there was a previously closed issue for OpenVR.... but I would like to get some help on this if possible... willing to compensate with $ if needed. This issue:

Using a mandelbox, the left and right eyes in VR are not getting the correct images. I suspect it is something to do with the projection matrix being incorrect. I've tried correcting it myself with no luck. Setting FOVzoom to a higher value will get parts of the fractal up close to the camera closer to correct (say a fovzoom of 3-5) but nothing I can seem to do gets it correct at all distances. Any ideas?