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Here I show a design I made that helps load filament into the MMU. The Adjustment Coupler is a new part on Printables.com under Plaidbear. It has a riser that holds the filament in the perfect position to maintain the 'S' curve filament path into the back of the MMU. The curve prevents load errors because the filament is pressed against the walls of the tube and cant slip backwards. I also show two new PTFE coupler bars I designed to control the PTFE tube spacing in midair. All tubing is 3mm inner diameter throughout the entire run (including the small tubes inside the MMU which I replaced and the one to the extruder). The distance from the back of the lower printer frame to the spool centers is 10 inches for reference. See the other videos in this channel for all the mods I made and used.