Just got a 2004 Sportman 700 with carb.

I noticed that the previous owner played a lot with the throttle stop screw to control the idle because the machine was not idling well (I found holes in the intake boot). How do I adjust this properly?

I am also confused about the carb idle screw that folks generally recommend to "turn out" 1.5 turns. I cannot find this screw. I feel stupid. I even have the manual and diagrams. This is externally accessible, correct? I am worried my carb is missing a screw or something…

Thanks!