Just a few silly questions here
1."Why did you have fuel in the centre tank when you load total was less then 12.000 kg"s.??.pre take-off..
As someone has already mentioned the pump out-puts can vary a fair amount (including the centre pumps)Which incidently have the same output pressure as the wing pumps but are fitted with a higher pressure output check valve..
2."Why did you elect to turn the inboard wing tank pump off as opposed to the outboard.?" The Inboard pumps have a inbuilt "scavenge feature"
3."Did you notice if the IDG temp on Eng 1 was above 104 Degress C..?
"Wing tank fuel temps indicate that there was a lot of "Warm Fuel" returning.