I recently purchased a 64 Riviera with a 425 and a carter afb carb. Was having a heap of trouble starting and could only get it to start by spraying starter fluid down the carb 2 or 3 times. Once it started it ran and idled but kinda crappy. So i had the carb rebuilt, and today replaced plugs, points and condenser and put rebuilt carb back on. Threw gas and starter fluid down the carb got it running, adjusted idle screws, set timing and it runs real sweet. idled it for 5 minutes and bought the revs up real high and held em there and it is nice and sweet. turned it off and let it sit for approx 2 hours. Went to start it and it STILL has starting problems. It just cranks until the battery almost dies. Only seems to start by spraying starter fluid down the carb?? But once it is started, it runs fine. Anyone have any ideas???? I'm not a carby guy or engine guy, and I can't seem to figure out what I'm missing here?? Any help is mucho appreciated. Thanks, Paul.