The Kobuki foundation alone doesn't drift, so it is smart the tilted inertia leads to the drift. Not surprisingly I can hack my URDF using a weightless superstructure, but I wished to repair this in a far more real looking way. I attempted all I can think of, and all https://www.uk-exhibitionstands.co.uk/product/standard-triangular-blimp-tower-with-tapered-tube-blimp/