EBR-75 Armoured Car (French Army)

This is a 1:76 model based on a SketchUp library item made available by ben D. (my thanks), but much changed as I was not happy with the dimensions (width). Imported using SketchUp and 3D Builder, iteratively as usual, to split it up as well as maintain it as a complete item.
First attempt at building was a minor disaster, as the four end wheels fell off easily, and the four 'metal' wheels were very weak. I attach two photos indicating the problems. Also, the printer jumped during printing;