FAME can't improve FP in Jet, and is of course tested for nowadays in the standard spec.
Pinkman, I know you keep harping on about GCMS but do you really think it wasn't done? I agree however that there would have been no harm in releasing the data or even add a simple line to the report that nothing unusual was noted on the GCMS profile.
Personally, I would be interested in a comparison of profiles between the fuel samples from the aircraft and the retention samples. A "depressed" FP (if it was in fact depressed) for the aircraft fuel could have arisen from a reduction in the heavy HC components present (wax dropout? - though no wax deposition was apparently found doesn't mean it didn't happen)
M9 (who investigates Jet A-1 contaminations for a living)