I read "Fork-Tailed Devil" and liked it a lot. It's what initially got me interested in the P-38.
You say that, if I haven't found the inaccuracies in that book, I haven't been looking.
Yet, having read a great deal on WWII history (perhaps about 50 books on it) and WWII aviation (including "America's Hundred Thousand," by Dean and the definitive tome on the P-38, "The Lockheed P-38 Lightning," by Bodie), I still like "Fork-Tailed Devil".
I'm sure it's not perfect, but I don't see so many huge inaccuracies in it compared to many other such books, and don't know what causes you to dislike it so much.