Here's a detailed guide on how to make the full load adjustment. I suggest reading through all that information then spending a lot of time searching on this site before you make any adjustments to your IP. It's really easy to damage your engine if you're not careful.

http://www.superturbodiesel.com/std/ip-full-load-adjustment-procedure-for-mw-pumps-t-189.html#pid1

Thanks! Thats a huge help!