The Kobuki base alone will not drift, so it makes sense which the tilted inertia results in the drift. Naturally I am able to hack my URDF having a weightless superstructure, but I planned to fix this in a far more sensible way. I tried all I am able to https://www.uk-exhibitionstands.co.uk/the-power-of-custom-exhibition-stands-for-maximum-brand-impact/