The Leo is one of those models that needs every part to work well, like in the cartoons when a small spring leftover after building this great machine (Wile-e-cyote comes to mind) it falls apart![X(]

Pay attention to the V part axels location in the hull as slight difference in arm alignment molded plastic allows for stronger spring tension on the front and rear roadwheels and gentler suspension in the mid portion roadwheels.