help

i have worked on bikes for over 25years. this is my first goldwing.the bike has 38,000 miles and has been in a barn 9 years. the body is now off for painting, i am trying to work out the bugs in the engine. i pulled the carbs and cleaned one at a time, replaced and started and fuel was pooling in the center box that connects them. i pulled them again and adj all 4 floats to the book spec(21mm) and now it runs(no fuel in box) but pops and hesitates when trying to rev. with choke about half on the bike will rev smoother but smells rich, the round black pump on the top of the carbs seems to be good, i have new carb ell to head o-rings, it will idle but wont rev worth a darn,(without the choke) what is up? all this testing has been done with the air filter completly off, for easy acces to the carbs. any help . thanks newbee