@spacesuitmedia
Updated rear wing endplate, corner furniture, and floor on the McLaren.
@thomasmaheronf1
This is a much better view of the Macarena. Its enough to allow me to adjust the model. The size of the wing and the angle of the linkage is a little bit off in the model (the linkage extends too much and approaches over-center,Mclaren has a notch at the top which prevents the linkage from stretching this far), but it's enough to have some idea of how it would move.

Indeed. I updated the post accordingly. Sorry for the info, and I';ve sent the feedback also to the x user.