Actually there are at least three anomolies that I am aware of.
1. The listed weight for the P-51D in the AH charts is approx. 9500LBS. The actual 100% internal fuel weight of a P-51D is over 10,000LBS. This is because of a dorsal fuel tank that is usually left empty unless you are flying to the moon and back.
2. The F4U-1 listed weight is approx. 12,037LBS. Again fuel internal fuel (wing tanks) is 12,650LBS. So 100% fuel in the F4U-1 is also more than the charts list because fuel tanks were considered an overload condition.
3. The F4U-1D is the only A/C in AH which has a drag penalty for wing pylons when not carrying ordinance. I have confirmed this with Pyro.
There may be others but those are the ones I am sure of.