NEM coupler housing

I redesigned the NEM pocket housing (original part 3) in Fusion 360 to make it stronger and to get the correct coupler height for this wagon: https://www.thingiverse.com/thing:2757092. Cut and bend a paperclip in an L shape and use it to secure the NEM shaft to the housing (see photo). I am also using 2 x original part 4 to guide the piano wires.