By following a tutorial on youtube i got as far as trying to start a print but got weird behavior out of the extruder gear and putting it in relative mode made no difference. I made this short video of what it was doing on the initial prime line at the start of a print. https://www.youtube.com/watch?v=iICQ8sENQJs&t= . That prime line is in the start gcode. I just need known good start/toolchange/end gcode for the MMU2S and to get this distance from the gear to the nozzle set right and i will be printing big stuff in color and with stunning precision.