rochester 2gv tuning and engine timing help needed

[motornutz]

i have a bit of trouble tuning my 2 jet and keeping the truck running. how many screws out (approx) do they (idle screws) need to be. and what about the timing. it wants to die at idle and hesitates upon acceleration. when hot it does not want to start back up (too advanced timing?) i havent put the timing light on it yet. i fixed a vacuum leak but it didnt make much difference. i know the carb is flooding. got any ideas or tuning tips? oh yeah the engine is a stock 1970 350.