I made myself a simple mission to practice air refueling. It's just a tanker, and my hog starting right on its tail at 18,000 ft. I've uploaded it for reference.
I set both to start at airspeed of 220 kts, with 220 kts for the waypoints too, but the tanker is always at 180 kts
Is 180 the speed for tanking? Air refuel.miz