As said above...get the temp down. If you are launching @200, you are most likely boiling water at some point during the run.

Up the squirters to get rid of the bog, then jet for mph, then go back and see if you can get by w/any less squirter. There used to be good reading on the Holley web site on tuning carbs.

Might want to check timing; that can make it run hot. Good Luck