New to restoring and have a '77. Having some problems. 1. Cannot seem to keep fuel flowing consistently into the engine. I can get it going for a couple of days and then it stalls out and won't start again 2. When I do get it running, after it's been running a while and heats up, it is a pain in the a.. to get started again. Kind of sounds like a dead battery and then it cranks. Any suggestions?