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Hi. Greg here from SS/AFX.

All above suggestions are spot on.
What are cam specs? If cam is not over 230 [email protected] duration, you are ok so far as size goes.

Next, check vacume at idle. Anything less than 13" in gear can cause poor idling.

There is a good chance that rockers shafts will need to be shimmed up to accommodate larger base circle on cam, if vacuum is low with above cam spec. Mancini racing or 440 source have these.
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