Yep no one is infallible as far as FMs are concerned.
However, italian skins in Target Tobruk are well researched. We have a lot of authentic historical references and we usually test skins with our real historian.
P.S.: there is a small italian team working on 3D models, FM's and skins. The advantage is that we have italian hard data impossible to find for any developer (be it AH2, WB or IL-2). We have collected almost every flight, engine, propeller, instruments, test and tech data for italian a/c involved in the MED theatre. The problem is that most sims are not open to accept third parties work, and ppl is much more committed when they see their work in the final product, you know.