Unless I'm missing something that is about the gcode it uses to slice/print from, x3g. The gcode you adjust for pid tuning is in the printer's firmware, which I gather is some variant of Sailfish on Flashforge machines. That's where the adjustments to steps/mm are made, not the slicer. Can a Flashforge printer hook up to a computer via USB? If so can't one just use Pronterface or Octoprint to access Sailfish to tweak pid like any other printer's firmware?