Hi
I have some settings for the A340-300 aircraft.cfg you may want to try out:
Under Flight Tuning:
parasite_drag_scalar =1.15
induced_drag_scalar =1.35
elevator_effectiveness =0.8
aileron_effectiveness =0.6
Under TurbineEngineData:
inlet_area=28.51
static_thrust=34000.000000 (for A340-313 and -313X)
Under GeneralEngineData:
fuel_flow_scalar=0.76
Under jet_engine:
thrust_scalar = 1.00
Make a copy of the aircraft.cfg before doing anything to it. You should end up with an aircraft that will burn between ~6000 and ~8000kg, depending on cruise level. I hope you like these changes as much as I do.
One of the Gents