1962BBfalcon

Hello this is my first post.....what I've got is a 1962 Falcon 2 door post with a D0VE 429, stock rebuild, 750 cfm Holley, single feed, vacuum secondaries, Distributor is a later model with Ford electrons and has been recurved. When I get on the gas at half throttle if pulls fine till about 3000 rpm and then starts to miss, I think it seem to run pretty rich and was wondering if anyone can give me an idea what jets I should be running or does it sound more like an ignition problem. Any help would be appreciated
Thanks

will cable

check your vacuum advance, or your timing could be too far advanced