Them Webers can run good with the mixture screws a 1/2 turn to 3 screwed out. Just because it's a 1/2 turn out doesn't mean you need smaller jets.You need to know which size is right for your motor. If you have a high vacuum it will suck more fuel in with less turns on the screw.If you have a lower vacuum it will need more turns. You can't go by a set number of turns on the screw. I always went by the plugs. I used to take the car out on the road and run it at 45mph then shut it down and coast into my drive. Pull a plug. Chocolate means you're good and white is lean. Black is not good.

As always you need to sycrometer them first. They all need to be sucking the same amount of air. Dean, I know you know a lot of this stuff but it's for other reading this that may not know.
I still hate webers though.

I been bent over the fender way too many times because of those pop snappin pieces of ahuuu... well you know what I mean or you will know soon.

Good luck I hope it helps.
Hersh
