Pivot ACS-PRO ... Help Needed

Hi Guys has anyone one of these r any idea how to work it.. i got a new scoob and this is in it i was movin it and the knobs got unadjusted by mistake... i assume -% is lean and +% is rich but just want to be sure :dunno: ... dont want to burn a hole through my pistons
thanks
John

http://i136.photobucket.com/albums/q173/kudz2k/21042008006.jpg

http://i136.photobucket.com/albums/q173/kudz2k/21042008005.jpg

It's and air/fuel controller, and should be left alone. Seeing as you adjusted it, I would get it run on a rolling road to check air/fuel ratio. Take it handy until that's done.

John