Sorry for spamming but replace the 4664 flare cost to 6192.

15480 mp from UI into f3 itll be 15480- F2 1800 (mp remaining 13680) (1UH consumed) - F2 1800 (mp: 11880 ) (1 UH consumed) - Flare 6192 (mp 5688) (final UH consumed) - Flare(0 Mp).