The kobuki foundation on your own doesn't drift, so it is smart the tilted inertia triggers the drift. Needless to say I can hack my URDF using a weightless superstructure, but I needed to repair this in a more reasonable way. I attempted all I'm able to think of, and https://www.uk-exhibitionstands.co.uk/product/pop-up-stand-3-x-3-bundle-curved/