Picked up my JAKL at the Lake Norman Store today. Was searching for and found a PDF of the manual. A search for the Adjustable Gas Block Instructions PDF lead me here. My JAKL came with an instruction sheet that everyone else appears to be looking for. Here is an image of the instruction sheet.
Since I could not find one, I made this image of the one I got so that I now have my archive copy and to help document for others.