When installed, the bed has this unnecessary set of spacers that irl is part of the consumables the other variant comes in-game, for the 3-slot one it is not needed
So instead it should be removed from the model to allow installation of the minicrane, which is normally an option for the universal 3-slot flatbed

Additionally, since we have a custom 2-slot and 3-slot flatbeds, maybe it would be a good idea to get rid of all the generic universal flatbeds and sideboards the truck uses (especially the sideboards since they are ugly).