Having a couple of problems, maybe related or 2 different problems? A little about the build... 505 stroker, about 11.5:1 compression. I have a Powermaster 1 wire 75 amp alternator, never goes over 12 volts on the voltmeter? And a Optima yellow top battery 750 amp, have to turn off ignition until cranking and than flip on the ignition to turn it over. Any ideas?