Thanks a lot Mark.

I will use your fuel configuration for short trips.

Left Aux     100%
Left              0%
Center          0%
Right            0%
Right Aux    100%
Left Tip      100%
Right Tip    100%

I might have been doing something wrong when I was flying with the following config

Left Aux     0%
Left              50%
Center          10%
Right            50%
Right Aux    0%
Left Tip       0%
Right Tip      0%

I had a 2 engine flameout at 30,000ft, #2 and 4, when the center tank emptied out and could not restart the engines. I tried ram air with high pressure along with air start but the engines did not want to light up. I guess I'll recheck the fuel setting configuration on the F/E station.