Labo RC Car - 3DPGH

I was designing this exclusively for sale but my interests have shifted. I might still come back to it. It works but not as well at the official and I'm not in-tune enough with the mechanics of how/why the original works better to fix it.

I tried to keep it as close to the original as possible.

I would gladly take any serious recommendations to get it to work better as I would still like to sell these but don't feel comfortable doing so until it works at least 90% as good as the original.