Badges update automatically and link to the resource pack page on MineUniverse.
Extends knuckle and split knuckle couplers outwards so they connect properly.
Extends and straightens out link and pin couplers so they connect properly.
Also positions link and pin in a way that lets it connect with a split knuckle coupler.
Pictures only show default couplers but copycat and wood headstock also work.
Credit to the original model designers at the S&R team