All this discussion of perkpoints doesn't get the basic problem.
During wwII there built about 60 TA152th and only 3 of them were in flight.
How many F4U-4 were built and flown.
Perking means that there shouldn't fly hundreds of last wwII planes. Make things a bit more realistic.
If you got no skills a unperked F4U-4 doesn't make any better.
This game would be much better without all this late wwII planes.
Get rid of LA7, Spit16, Tempest, 190-D9, 109-K4 and what ever came not earlier than jan. 1944. With that point u only have to perk the jets and all works fine.
NghtFire