sounds like the float, why would someone randomly adjust your carb?
let the car sit for a while until the well is empty. get a screw driver and a hammer, hit the well with the handle of the screw driver, then try the hammer, if no good then pull it an clean it.
my 79 qjet was the biggest piece of crap ever designed, i could have done better with a spray bottle and a long string.

in the end i found a 73 4 barrel from and olds that bolted right up in its place, never another problem.