Flies okay on the current version. Only problem I had with 2.12.4, and this happens a lot with this version I find. After I shoot down my first P-38, the other turns into a ghost plane. It is still there because I can see tracers and flashes from the guns. But I can't see the plane. It is like the game forgets to draw it.
This would happen a lot with the PacMix mission as well. But it only did this bug when I flew the Japanese flights. It would seem the bug came up again with this mission. After I shoot down one, a ghost plane is there. I am sure it is 2.12.4 and not the mission file.
The other odd thing that I came across, it isn't that big of a deal. This has only come up with 2.21.2. When I flew the Japanese flight. The P-38's came in at lower than 3k feet (It could have also been, they started at 7K, but I didn't see them till they were at 3k). However, when I did get a tally on them, they were not diving, but flying straight and level.
When I played the mission on the allied side. The P-38's got up to alt. I am still practicing my BnZ!!! I am getting better. However... I still end up turning and burning. I just try not to get below 200 KIAS.