Well, we are currently about to take part on leg 25 of this journey, and fuel has not been an issue thus far. When we have had legs long enough to warrant having the wings full of fuel, and some fuel in center tank, I have always started the flight with both engines draining from the center tank first, and then switched to wings after it ran dry. I have never attempted a crossfeed. Come join us on the MSFS discord later today if you would like!
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