white squares in steering wheel

Hello - I have a probably small graphics issue, perhaps there is something easy to check for me. I have setup the generic 3D steering wheel to be found here:
[www.grandprixgames.org]

When I change some cars to newer ones, I get some white squares in the lower half of the steering wheel.
What could I check? Perhaps some position in Teambuilder, but not sure. It seems to be because of newer car input, but normally I should not have changed any car shape (as I don't know how to make it..).

Sorry for giving not too much information, but all this is new to me, and I am just happy that I could get my GP4 work in Windows 10
If you need to know something, let me know.

I took now the other newer version of the generic steering wheel which is fine and without white squares.