Tamiya Flatbed Trailer Upright modification

The original uprights with chain are not easy to change once the wooden flatbed is glued in.
To have the possibillity to choose, I designed an adapter which stays on the frame, the uprights can be dismounted easy.
You may choose to mount the Rungenhalter up or down. Down there is no obstruction to the flatbed, but the uprights are about 1 cm shorter in total height. (please see pic).
Mounting the Rungenhalter up or down cannot be changed after wooden flatbed is installed without taking the floor out again...

Parts needed:
10x Rungenhalter
or
10x Rungenhalter schmal
10x Hex screw DIN 912 M3x8 (not longer!!)
10x M3 nut small (standard)

Installation:
First insert M3 nut into "Rungenhalter". It may be stiff, so take a screw for positioning. see Pic.
Install to frame with original screw (or another 10x Hex screw DIN 912 M3x8) with the standard supplied M3 nuts. Choose up or down orientation for all 10 parts the same...
Install uprights with the Hex screw DIN 912 M3x8 to your liking.
See P