Thomas Ruth A330-300 centre fuel tank

So I only recently found out about the centre fuel tank option on the real A330: The -200 has been using it since first flight, but only in the last few years (5?) has the -300 had the option to make it wet. How easy would it be to update the config to reflect this option?

I had set up an Air Caraibes -300 flight from Orly to Guadeloupe and online flight planner gave the fuel as more or less maximum  - I'd actually misread the trip fuel as 177161 not 117716 lbs!  Thinking that no way would they allow the trip with no reserve capacity triggered my investigation.

I could just paste the extra fuel tank line from the -200 to the -300 config but its longitudinal position from the datum would be wrong, but how wrong?

Any ideas please?

-200 config.

[fuel]
Center1   =  -10.5,   0.0, -8.2, 11088.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
Center2   =  -93.2,   0.0, 5.7, 1617.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
LeftMain  = -8.9, -27.9,  -1.7,  11147.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
RightMain = -8.9,  27.9,  -1.7,  11147.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
LeftAux  = -36.3, -67.9,  2.5,  974.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
RightAux = -36.3,  67.9,  2.5,  974.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

-300 config.

[fuel]
Center1   =  -100.5,   0.0, 5.7, 1646.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
LeftMain  = -8.9, -27.9,  -1.7,  11247.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
RightMain = -8.9,  27.9,  -1.7,  11247.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
LeftAux  = -36.3, -67.9,  2.5,  964.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)
RightAux = -36.3,  67.9,  2.5,  964.0, 3.0     //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)