print without problems and absolutely NO problem !! I haven't mounted it yet because I thought the filament collector could be removed simply by lifting it, but does not allow easy emptying. I haven't assembled it yet but I'm thinking about using magnets so that all I have to do is lift the slide up
edit: i see and 3° file look like an connector but i print the First profile with the 2 Pieces and if i assemble its not mooving up like you said, this 3° piece Is needed??
(Edited)