Thanks everyone for you ideas and suggestions. The heads were not milled that much just enough to clean the surface. I have not messed with the Holley.
So heres my new punch list:
Going to pull the fuel bowls check for debris in the jets and reset the floats. I know the fuel filter is good. It is one of the clear glass ones. Mounted after the pump.
I also want to try readjusting the valves one more time.
I know what you mean Hcompton. Luckily I have the 64' truck at home now and I when I get frustrated with the Caprice I close the hood and work on the truck. I know at some point I will figure it out. That is one thing about hot rods. When something goes wrong its not always apparent at first.