A modified idler arm for Titan extruder clones.
Also a new base plate (Aero only) that has been modified to make the hob gear align better with the filament path.
I used 2 off M5 brass nuts for the stepper pivot. These have a 7.85mm width(flat to flat). Each nut is about 3.5 to 4mm thick. Install both nuts then drill them smooth with an 5mm drill. This rotates much more smoothly than ABS or PLA will.