Is that one of those Carter 2bbl's? I worked for a Chrysler dealer back in the 70's,those carbs where a little tricky to set the acc. pump and metering rods. It's been a long time but if the rebuild instruction sheet doesn't have it, go to Google and see if you can find the factory adjustments. That carb still my be available from a major auto store. Heck , I went to a Advanced Auto Parts store by me and they had every front suspension part in stock for my Cuda except for the pitman arm, I was shocked to go home with everything I needed. I threw out all kinds of 70's factory manuals back in 2001 after I moved out of my other garage...Who knew that stuff would be hard to find.