bravo! Original thing is 324946

thingiverse

The Solution Falls into Place. The filament feed aligns perfectly with my CTC machine's dual extruder. I had been plagued by troublesome bind issues caused by the original tubes sitting loosely on top of the extruder, resulting in an unpleasant popping sound. It required some cleaning to ensure smooth operation and a snug fit of the threads. Pairing this solution with the rear filament piece has completely eliminated my binding problems with the filament feed system.