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For now block all the ports unless your are running a brake booster. Check for a vacuum leak under the carb. Vacuum time your motor turn the dissy advanced and see the vacuum come up to its maximum, then back it off 1 1/2" Hg. That should get you about right. You may even come back more than that. I think John will tell you less is more with your timing. You maybe horribly over carbed , what is it a 1406 ?