Leo, thanks for making those changes! I tested out some of the lines using the manual control window in Repetier Host, and it looks like the white space between the coordinates is necessary. Also, the M106 Sxxx needs to be on its own line. I don’t know if it needs to precede or follow the coordinates.
I’m looking forward to trying this out. Like Ryan said, thanks for all your work on this! You’re adding value to the MPCNC for all of us.