Another "recommend a cylinder head?" thread!
Engines are packages and Norm may have the info from your build handy - some guys keep that stuff forever. If the issue is too high a static there may be more to fixing it than just heads. So be forwarned. Regardless we'll need a lot of other info to help out. Volume of the heads, part number of the pistons, position of the piston in relation to the block's deck surface, full camshaft specs for a start. Pictures of the intake ports taken from the port opening might be good too.
I'll add the carburetor model, ignition model, distributor type, initial timing, centrifugal timing (amount and rpm it comes in), and vacuum advance if it uses one, along with the type of vacuum the advance is using.