No clue about working on carbs

I just put a 2 bbl carb on my slant 6 and its giving me problems. When i try to start it it wont, until i spray carb starter in it then it will start but then shuts off. Then after i turn the screws to the richest setting and set the idle real high it will keep running. of course after the engine warms up i can re-adjust the carb so it isnt running rich and set the idle down and it will run ok. but when i go to start it the next day it wont until i adjust it to the rich and high idle settings....help me please...do i just need to chuck this carb or what....im completely carb retarded :scratch: any help is much appreciated.