ar/fuel screw adjuster
 

found this will searching ebay to kill time.. seems like pretty cool and useful to have esp if it actually mounts in place to where its there all the time..

http://cgi.ebay.com/ebaymotors/MOTIO...item4151e1bdc1

carb adjusting screwdriver
 

you can also buy stuff like this at alot of recreation supply stores.. I bought one for $28.00