One thing that I noticed and I hope it was fixed for AH3, but I have my doubts. If you happen to encounter one lone B17 at 33K and it’s tooling along and you are able to knock out an engine. It appears to have no effect on aircraft performance. That is, with only three engines the B17 should not be able to remain at 33K. It should have to descend, I saw no such impact on performance and no impact on speed. That was the last time I chased any bombers.