I shamelessly stole the attached pictures from a Jeep forum. Carter went out of business in the mid-80's and carburetor kit providers now sell other needles and seats (fuel valves). Notice the big difference in the length and how it affects the float. Gently bend the float tab back to a normal position. Try not to stress other parts of the float while bending.
Jon H., being a wise man, purchased many original Carter parts before they were snapped up. Your are experiencing one of the hiccups in rebuilding your own carburetor. That's why I said you are in good hands with Jon H's kits.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."