So I have a the above razor, and I've tried scraping my face with it, but I found it very aggressive, much more so than a setting of 5 seems like it should deliver. I tried dialing it back, but the shave felt the same. So I started examining the razor, and I can't find any appreciable difference between a setting of 1 and 9 from any of the moving bits. So my question is over what the dial actually does; does it increase/decrease the tension on the blade, adjust the "openess" of the razor, etc? Thanks.