Follow their code on github. Typically the print starts above the bed but i cant seem to figure out how to avoid this myself Go to faceit to connect with xiaolu999 and see their full profile.
littlereyx | Instagram | Linktree
You can do some really interesting things with full control gcode but it is generated outside of the bambu slicer
The fullcontrol website can output gcode to throw on a sd card but i have not been able to get a successful print from it