i can't visually tell the difference in any of the 1-9 settings 2 looks the same as 9 to me.am i missing something?
Your razor may need cleaned. The adjustment pushes up part of the bottom plate. When you adjust it the other way, the plate should fall back on its own. However, sometimes it doesn't fall down due to gunk (dried lather, soap scum, etc...) in the razor. If you don't see any difference between a setting of 1 and 9, try cleaning the razor as well as you can. You may need to let it soak in very hot water (some suggest near boiling) but if you have a super slim with plastic parts extremely hot water could damage it. Then, scrubbing bubbles will get most of the crum that you can't get to with a tooth brush.
As far as I can tell, my T2 doesn't have any. My understanding is that in 77 (X date codes) they started getting a plastic bottom plate. I have seen them in pictures and the bottom is black and looks plastic but I couldn't tell you if it was completely plastic or plastic coated metal.Where are the plastic parts?