Okay will also look at the P39Q.
I have to do fuel testing on both the La5N and La7. They need to be able to stay airborne for a while (have more than 28 minutes of flight like in the MA). So need to see what their range is at fuel burn of 1.0.
I disagree! Make it suffer!
Take the historic range, compare to the range on the map, and increase fuel burn to limit the LA7 to about the approximate range it would have had if used this way in real life.
Like how in the BOB setups they adjust the multiplier to limit the 109E time over London*, only in this case it limits how far out the LA7 could go. For instance, it might have to be limited to base defense, coastal patrol, bomber interception, etc, whereas the P-39s and Yaks are better able to cruise into the combat zone, fight, and cruise back out.
It's a historical limitation. Same as the spits had a couple of FSOs ago. Don't change fuel burn to bypass it

*= I don't think they do this properly, IMO, but that's another topic altogether