I have a car that gets elevated by 4 VectorForces. I tried to transfer the mass of the car to a part welded to it for easier editing of density and center of mass position, but it seems the VectorForces completely ignore the AssemblyMass of the car.
Without mass part:
With mass part:
I assume this is some sort of engine bug since the AssemblyMass of the car in both videos is practically the same and I don’t even use the mass for calculating the hover forces.