Can't get large fuel truck for PMDG DC-6

[triflyman]

Have configured the PMDG DC-6 with the GSX Customize Aircraft Editor and everything (Catering, Baggage Belts and Boarding/Deboarding all work fine...however the small white Texaco Fuel Truck always shows up...not the bigger fuel truck.  I have the height for the refueling point set above the required 3.45 meters.  Would appreciated help on how to get the larger fuel truck to show up.  I am in P3D V4.

Thanks,

[virtuali]

The refueling point height is not the only parameter that is being considered for the choice of the fuel truck vehicle. The fuel capacity of your plane is also read and, if your total fuel capacity is less than 3500 usgals, the small Texaco truck will appear.

[triflyman]

Ok...thanks.  That explains why I get the large truck on the A2A Connie but the small truck on the PMDG DC-6.

Any way I can lower that threshold since the DC-6 holds 3222 gal and the large truck would still fit under the wing?