The Kobuki foundation by itself doesn't drift, so it makes sense that the tilted inertia leads to the drift. Obviously I am able to hack my URDF having a weightless superstructure, but I wanted to correct this in a more reasonable way. I attempted all I can consider, and all https://www.uk-exhibitionstands.co.uk/product/pop-up-stand-3-x-5-bundle-straight/