Given that the original spec for the XTC Advanced was 100-130mm, that corresponds with the 44.5cm going on their specs for suspension correction CarbonCycles.CC :: Components :: Products :: Forks - MTB Carbon (UD) 1.1/8 inch Steerer :: eXotic UD Carbon Rigid MTB Fork - Disc Only Post Mount :: CC-F0M45

You could run the 46.5cm version CarbonCycles.CC :: Components :: Products :: Forks - MTB Carbon (UD) 1.1/8 inch Steerer :: eXotic UD Carbon Rigid MTB Fork - Disc Only Post Mount :: CC-F0M65 as this is corrected for 130mm, but what we don't know is which end of the travel you are currently planning to run the frame at.