@Rich-O-Brien I put this offer to help on the old thread. I'm not sure if it will be seen, so I'm adding it here too:
I would like to offer to help with work getting MSPhysics updated. I wrote the infamous plugin sph4bar in 2006 which models spherical 4 bar mechanisms. I also wrote GeoSketch, a plugin used by aerospace companies.
In a previous life, I worked for Cadsi, where I integrated DADS (Dynamic Analysis and Design System) into CAD systems such as CATIA and Ideas Master Series.
Now I am retired and have time to kill.