I have 2 problems that I would greatly appreciate if someone could help me with. The first problem is that when you select the vehicle, the platform starts moving even without wheels, and I have already set the coefficient of friction, but it doesn't work. The second is that when you select another type of platform or whatever you choose to modify it, it simply stays upside down. If anyone can help me, I would be grateful. The flatbed don't have any image of body, so use the "ctrl + T" to ative the triangles.