After reading tons of posts, I know that everyone says ditch the carb ASAP. I plan on doing that once i rebuild the engine. In the mean time, how do i adjust the mixture and figure out the proper mix. It is currently running very rich. There is a strong smell of gas in the exhaust to the point that i smelled like gas and had to shower. I can't find any external leaks. 51 chevy 216 with original engine and carb.