[flyingprovost]

Also, which modpack (if any) are you using?

None, I host with 4.09m clean and CRT=2, but after revising coop.txt mission debrief, I found fighter pilots having , 70% fuel, like this:

18:02:59 4IAP303 loaded weapons 'default' fuel 70%

This was a Yak-9T.