Reply To: Titan Extruder › Forums › The Beast V1, V2 and Elevator 3D Printer Support › Titan Extruder › Reply To: Titan Extruder December 24, 2019 at 1:54 am #1262 danParticipant Having measured my stock here. It appears your motor shaft dimensions are slightly out. My extruder idler arm measure 4.95 and motor shaft 4.95. If its not too difficult, can you swap that motor for another?