about fuelflow, I have not been able to reproduce
are you flying while using career mode such as FSeconomy , maybe it s rewritting fuel qtity over the game, also have you tried removing other mods to exclude a conflict
I suggest you to head over JustFlight forum, there you may be able to get dev answer :
not to mention the “official”/main thread dedicated to the analog King air;
about the landing roll, indeed it tend to stop pretty fast I think it s related to how the base 3D model was set (like too much friction point) that produce that issue, JayDee and Nick (he’s the black square Dev) tried their best but weren’t able to tweak this on the flightmodel side. They are aware of this, but here are kind of limitation faced by dev, he can’t edit that 3D model aspect