I wonder how the difference between a 2 and 3 seater is only 15 kilos.  The seating arrangement I could see in the
empty weight, but useful load only drops 15 Kg too!  Apparently the 3rd crewmember was a very small child?  

     Max gross is 11,000 pounds where the P-38 was almost double that at 21,600.  Kind of strange numbers considering
all the extra crew carried by the G1.