This print screen show how many of difference have on all technical drawings of the Dewoitine D. 520 which are available. I have check many of images from publications and note a number of new panels and access door's. Also there is options with differnet front cowling etc., etc.,... I would very happy if any of you could post here some very sharp scans of images of this plane as well some additional work have to be made for the basically corect profile.