So i am Building my second 3d Printer, using the Titan extruder and chimera Hotends currently i am just trying to get one Head working right. Did a first simpl print and everything went ok using MatterSlice(I hate it but i am used to it for example ID's are always off), slight underextrusion. Then tried printing the trusty old boat, using Cura, everything looked great leveling worked. Where i am now: - played around with acceleration, speed etc, no change - huge underextrusion infill doesnt get printed at all - titan is skipping steps, even getting turned backwards if i try extruding 5mm at 10mm/s it is a game of luck if it works. but faster is not possible. I have got the new Small steppermotor with the 0.9° stepsize maybe an issue with that. Is the nozzle to small i read in another thread that someone had issues with wrong drilled nozzles. Thanks in advance, i know everything is vague, just ask what infos would help then ill supply them or pictures.