So my 57 nailhead has new battery, electric fuel pump. Upon starting it cold I turn the ignition key on to prime the pump press gas pedal a couple of times to prime edelbrock carb with electric choke and instantly fires up. I let it warm up 5 minutes and begin driving with no issues, drive around 20 minute drive or so, shut it down a few minutes, go to start use same procedure as always but cranking as if battery is dying, it turns on after a few slow cranks and drives normal. Altinator puts out 14.6 volts at idle when duel electric fans turn on it draws down to 13.4 and with lights on its 12.7. Do I need a higher voltage Altinator? My GM 7127 puts out 63 amps and seems sufficient being I don't have many power drawing devices other than fans and low volume edelbrock fuel pump. I forgot to mention I has an HEI with new coil and ignition module as well. I know many purists are probably cringing about the 4 core aluminum radiator electric fans edelbrock 4 brl carb, HEI electric fuel pump and modern duel power master cylinder set up, but I purchased the car this way, the old timer I purchased the car from whom is a dear friend restored the car for "Florida" driving. Any suggestions as to why harder starting when hot? Thanks