need help with 66 afb!!

When I bought a kit for 67 AFB 4305S I found the 2 needles at the float were same as OEM but the 2 new seats were much taller. It took some creative bending on the floats tabs and altering the slosh baffle a little to get it to where it would work properly.
I doubt this is relevant to you current problem just saying.. you cant trust any aftermarket parts to be exactly right today.
Good luck