i have an 84 with a q-jet 305 i started noticing something wrong this morning. i am just tring to narrow it down. while trying to get going it is like its popping through the carb and slightly bucking. its real bad if i try to floor it. now once i am up to speed , it seems ok. what could be my issue ? also , when i rev it up at idle in park, it hesitates alittle at first then clears out just trying to figure out if its fuel related or distributor.