Well I have a 74 duster with a 225 in it with a 1920 carb. It doesnt like to stay running at idle unless you have it running pretty high rpm. I was woundering if the choke was supposed to open completly vertical because if I slightly choke it the rpm rise and it smooths out. Then I can drop the idle down to a good speed. So to me it sounds like either my choke is opening up to far or im not getting enough fuel. It has a new pump on it and the filter looks new. So what does that leave? Reabuild? If so where is the best place to get a good quality rebuild kit?