hello I dont know alot about mechanics so this question will sound dumb, but im going to ask it. how do U know if you adjuidted the mixture correctly on the 1 barrel rochester? My friend told me I should adjust it, but while I was adjusting it the swrew came out all the way. where about should the screw be I mean turn wise 1 turn, 2 turns, I have it turned all the way in right now for a starting point. How many turns should I turn it to the left now to have it set almost right. thanks mikef