Spacers/connectors (and carry cradle) for RC foldable crawler bridge

I use two slightly different versions of foldable ramps/bridges for 1:10 (or 1:8) RC expedition cars and wanted to upgrade them a little. The biggest issue is on uneven ground, when the “tracks” like to slide apart, which of course leads to the car falling off. These little spacers solve that: just click them in and both tracks are nice and parallel !

Fits both: https://www.thingiverse.com/thing:4616621 and https://www.thingiverse.com/thing:3611412

Included f3d so you can tweak the width.

Print from PETG or something similarly springy, PLA might be difficult to detach without breaking.

Also included simple cradle, to carry the heavier bridge on my pallette module for 3D Sets long Max van.