I'm lucky enough to have some of Mathias's Work in progress files which I've slowly been sorting out to at least a B class aircraft.
this He115b is almost ready, I've got a half decent FM in there, it lands and takes off from water with no issues. I have the texture sheets mapped out now to facilitate painting. (when I first got it, it didnt have the mapping outlined on the supplied sheets. But Mathias sent me a second lot of files that had the parts outlined. A god send as I had been using trial and error to work out which part of the texture sheet each part used).
unfortunately the source file is gone, and there are some parts that are not texture mapped in Gmax, you can see the canopy frame and pontoon struts are using gmax rendered brown rather than a texture map....