Aft CG and Fuel in Stab tanks
If aft CG is so much desired, why does the 744 uses its Stab tank fuel immediately after its Centre tanks are depleted?
Airbus on the other hand transfers fuel to the Trim tanks if it's not full passing FL 255. Thereafter, as fuel is consumed it transfer Trim fuel bit by bit Forwards to maintain that Aft CG target minus 0.5%.