- GSX Refueling:
As explained so many times, both on the manual, and on the forum, GSX WILL NOT REFUEL the airplane, when the airplane is flagged as having a custom fuel system, and all the PMDG planes surely are. GSX will only adapt its animation to the refueling process performed by the airplane, but you MUST follow the procedure explained in the manual to use such planes.
- GSX Vehicle:
The Fuel Hydrant cannot service airplanes with a refueling point under the wing lower than 3.40 meters, and the 737 is surely lower than that, so you are not supposed to see the Fuel Hydrant with the 2 guys, but the smaller tanker with no people.