I know with the 51s you want to burn Aft first situationally, is there any kind of definitive list of burn order floating around out there?
I don't think there's a "definitive" list, because everyone has personal preferences. Some people take bare minimum gas to begin with, others roll with full tanks. I can't say much about other aircraft off-hand, but in the F4U-1 and 1A I usually recommend:
Roll at 100% fuel
Burn Left Wing to 50%
Switch to Right Wing until it's at 75%
Alternate Left/Right wings in 25% increments. How much you leave is personal preference, but I usually stop at 25% LW 50% RW, however you want to leave minimum 25% in the right wing, and it should always be higher than the left.
Once you have your wings burned go to the external if you've got it. Otherwise, switch to Main and keep it there until you need to dip into the wing tanks.
This helps balance the aircraft against the torque of the engine and gives it a little more stability. Corsairs also LOVE to take main fuel hits, so that 25% in the right tank gives you a nice reserve.