92 175 intruder problems !!!!

[taterhead]

Engine & carbs recently rebuilt. ran fine for about 2 tanks &then after sittin awhile engine would start fine but would start stalling. had to bump choke to keep runnin,or pump bubble a few times. Now it will not start but every once in awhile. once it starts it sounds fine & i can turn off &restart mulitple times easily. take in mind this is on th earmuffs in driveway. once it sets for a couple of hours,it will not start again!! Ive already changed th bubble with no luck and always run evinrude fuel treatment. fuel lines are in good shape. ANY IDEAS ?? thks for ur time.

[boats.net]

Bumping choke to keep it running indicates a dirty carb, probably need to remove and clean carbs.