you can continue pouring bucket loads of carby cleaner down the throat at high rpms and "maybe" it will eventually come right... or you can just bite the bullet and.....
pull the carby off , buy a rebuild kit from gas miser, thoroughlly clean and reset the carby especially taking care with the float settings. youll be amazed at how good it goes afterwards.. most haines manuals will guide you thru it, the gasmiser kits usually have a note with them as well.
theyre not hard to do just time consuming.. an easier way.. buy and adapter plate and a 36/36IDF weber from and alfa wrecker and go have some fun.