That might have been answered already, but I couldn’t find an answer in the forum.
In the build instructions, step4 Tops, the belts are not on the truck assemblies on the photos.
Are you supposed to take them off and then put them back on later? Or was it just to have less cluttered photos?
In the previous step it is advised to put the belt before the idlers cause it would be harder later, so I guess it would be even harder after the truck assembly is fully built…