Quick tip. We learned that if tightened too much, these tubes can be an issue and prevent proper filament feeding. After trying to push a piece of filament through Andy had to loosen up all the screws. Crazy busy weekend ahead but Andy also wants to finish installing his #MMU2S Stay tuned!! Thank you and #haveagreatweekend ◇◇ ◇◇ ◇◇ #prusa #prusaupgrade #mmu #3dprinter #multimaterialupgrade #multimaterial3dprinting #3d #3dprint #3dprinting #3dprinters #maker #3dprintersofinstagram #makers #stemtoys #makersgonnamake #stemtoy #prusai3mk3 #prusai3 #prusai3mk3s #3dprintinglife #3dprinterfarm #handsonlearning @andystechgarage #atg #andystechgarage #stemandy DO NOT REPOST without credit or permission. https://www.instagram.com/p/B8lep9FnKPB/?igshid=1xpql47m9t6v5