I had my needles backwards in my head on my last post, so I modified it. I'm running the 7dh3. I want to try the 7dh2, since it is leaner. I screwed up when I originally bought my carb and ordered the snowmobile version. I've had to change so much crap around to get it to work right. I've lost track of a lot of stuff. Being a snowmobile carb it had the 7dh2 needle originally, but I have since lost it.

I researched the differences in the two versions of the carbs and noticed the snowmobile carb had a 0.7 air jet and the bike version had a 0.5 air jet. So I went to order the 0.5, but sudco didn't have it when I tried several years ago. So I'm curious if that is part of the problem also. The thing is, I have never found clarification as to which air jet is leaner. I am certain that a physically bigger air jet is leaner, but the scale could be inverted, for all I know, to save confusion, since larger numbers usually indicate richer in a carburator. (If that makes any sense)

So which way is it? Is 0.5 richer or leaner than 0.7?

Oh and thanks for the info on the needle jet change. Looking at the mikuni manual it looks like that will have the biggest effect on the range where mine is fat. I ordered an aa-0 and a 0.5 air jet and a 7dh2 needle. I'll start playing with it after I get everything put back together.