idle problem

[import racer]

i had a problem with my idle so i used seafoam down the carb and now the car runs worse,what do you think is wrong with it!any suggestions.when i start it runs ok til comes off fast idle then it stalls out. well i got another carb from the j/y seems to work fine now,not gonna use seafoam again. well i got another carb at the j/y put it on and it runs ok now,looked at the carb i took off and found out my a/f screw was gone ,should it fall out so easily.

[A20A1]

you may need to run the sea foam out of the system... how much have you driven since using seafoam? Othern than that, read some of the threads labled "Important" located at the top of the carb tech froum.