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Works great thanks to the double transport. The only issue that i ran into is if the hotend leaves a thicker spot on the filament when unloading its often catched at the bow and ripps as i try to pull it out. Id then have to fully dissaseble it.. Maybe ive to widen or wear it out a little more. I had to print an in xy direction scaled up retention ring as the original one was too hard pushing the halves together. Iam using the original mini bic lighter wheel and it performs! As iam coming from a geared extruder its quite a change to are not able to turn the drive by hand to load it or pushing some fila out by hand. Maybe ive to print a kind of knob to turn the shaft by hand as i used 6 sided long nuts as the spacers for the bic wheel. Anyway a genius design, thx (: