I am currently using GSX on a vanilla install of Prepar3d v3.2. I notice that when the any movable objects with tires move into position, the tires are partially underground and spinning eratically. For example with the carts move backwards, the tires spin forwards and very rarely do the wheels turn left and right. If they do, its the back tires or the turn in the wrong direction. I have installed the latest standalone as well.