I enjoyed reading your post about adjustables, lot of good stuff in there, but think you may wish to look a bit closer at the D-1/F-4 (Red Dot and Toggle razors) if this is to be added to the wiki, then please note that the blade is not adjusted up and down. The doors bend, shape and clamp the blade to a plate that has a fixed height. It is the safety bars that are adjusted up and down.
I will have a look when I get back home later and revise it as needed. Thanks for the info...........the great thing about this place is we all have something to pass on to other members....
Steve