I dream of 100mm/s. I will tune this for speed when i get it working. To see how fast it can print good. I am not sure about the palette but I am definitely in over my head on the MMU2S. I am so close. So painfully close. I have to figure out why my extruder drive gear spins slow backwards at the start of the print. This slow speed in and out of the filament is causing jams in the heatbreak. I made the changes to my start Gcode as suggested but it still does this same thing at the very start of the print. Why does it do this @ 1:40 in this video??? https://www.youtube.com/watch?v=iICQ8sENQJs&t=