The pylons do elevate and depress for aiming rockets and launching the Hellfire missiles at the correct pitch, and also level the stores with the ground when we land. The tanks are fixed nose-up, to minimize drag in forward flight, and they stay that way on the ground, despite the lack of ground clearance aft. A full 230 gallon tank weighs almost 1700 pounds. Even though 150-200 gallons is more typical, that's still a lot of stress on the actuators and pylons, and you don't want that much mass pitching and sloshing around out there, especially if you're landing on a slope.