Ok here we go, I'm happy to share this and I'm sure they work fine because they do work perfect. It's a collection of planes, so somewhere it should have the 1,2,3,4 number as well. In my example it's a full forest with 1800K vertices or 450 trees. Could not find much myself but this info took me 3 days to figure it all out. Works fine on my WIP Falkenbergs Motorbana.