Originally Posted by
JatoTheRipper
The pinion access hole in the bottom of the chassis is a huge mistake by Tamiya. Including tape to cover the hole is a Band-Aid that just doesn't work. I designed a reusable plug. I printed mine on my home printer and I'll try it out this week. I have uploaded my design on Shapeways for sale.
Nice CAD skills!

Wish I could do stuff like that. For real car mods too.