Magnetic PFTE coupler dock/terminator M3 Remix

Quick remix that allows you to use M3 screws and nuts instead of the M4 in the original, as well as allowing filament to pass through a hole in the back part to go into the drybox. It's not perfect as I intended it to just be a quick edit for personal use, but hopefully someone else will find it useful! I've also attached the .f3d file if you want to make any further edits yourself.