Ive been down this road the thing I found is not a lot of people know any thing about these carbs and it hard to find any wright ups about them because fuel injection has been the big thing with them Ive also found that if the carb hasnt been screwed with its not the carb thats giving you problems whats it doing
what carb? with such a general question and no pics or info on what you have i can only guess. but in general. find and fix any vac leaks before you touch the carb. then go with the stock settings and fiddle from there.