That's a new one to me Bearcat. I'll have to experiment with it.
I also adjust nose or tail heavy conditions in the .cfg file, but I do it in the weight and balance / empty weight CG section section. This section looks like this:
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[WEIGHT_AND_BALANCE]
empty_weight=33280
reference_datum_position= 0.0, 0, 0 // (feet) distance from FlightSim Reference position: (1/4 chord, centerline, waterline)
empty_weight_CG_position= 0.0, 0, 0 // (feet) longitudinal, lateral, vertical distance from specified datum
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If the aircraft center of gravity is positioned correctly the (feet) longitudinal number is
0.0. This is often wrong.
If the plane is nose heavy the CG needs to be shifted rearwards until the plane files level in cruise - which is a negative number like this:
empty_weight_CG_position=-1.5, 0, 0 // (feet) longitudinal, lateral, vertical distance from specified datum
If the plane is tail heavy the CG needs to be shifted forwards until the plane files level in cruise - which is a positive number like this:
empty_weight_CG_position=1.5, 0, 0 // (feet) longitudinal, lateral, vertical distance from specified datum
It's a matter of changing the CG position to find where the same weight is fore and aft of the CG, and test flying until the plane flies level. It can take some time but it makes flying the plane much more pleasant when you get it adjusted.
In much the same way, a real life cargo aircraft Loadmaster will calculate the position of the cargo so that fore and aft weight balances at the CG as much as possible.