BF109 - Can't we just have the gunsight in the middle?

Lixma, as you have the best skills to explain all this and also all the information, including the things you just posted about the revi adjustments and the FW190 thing: could you assemble all this into one fluid text/document and provide this to luthier?

Perhaps open a new thread in the FM section with an appropriate title (just an illustration for what I mean - you surely will find a better one than me: "Pilot with two eyes and revi sights: How it should be") and put all the explanations and pictures in it. And send the link to luthier.