Does anyone know of an r1+ version of this?: http://www.thingiverse.com/thing:889541 Combined with the quick release plate, removing stuck filament from the extruder is easy with the spring-loaded filament interface. The issue for me is, it's super fiddly to do back up once you clear anything. I feel like I need three hands to tension both springs and click it back in place. Loading filament is easy, I just don't want to dread opening it up to check for a jam.