The new firmware for the Masso G3 Touch (V5.13) added support for the G200 (min power/power ramping) (Masso link), I’ve looked through the LB documentation and the grbl supported commands and G200 doesn’t appear.
So the question is there a device type that would allow for use of the G200 command in exported Gcode from Lightburn?
Just to follow up on this, the G200 command is included in the Start GCode.
The guide on the Masso site is a bit confusing, I found the original GRBL-M3 (1.1e or earlier) set up with the G200 Q0 command added to the Start GCode to work better, than using the custom gcode device type. Specifically the air assist wasn’t coming on despite the appropriate commands being present when the set up shown in the Lightburn Pro V2 section of the Masso guide.