71 swinger has been at the upholstery shop for several months getting a new interior. It seems it was sitting too long because it died on the way home. When trying to start, fuel is coming out of top of the carb. So I knew something was wrong with the floats. I took the Edelbrock 1403(500cfm) apart and one of the floats had a hole and was full of fuel. And the whole interior was green and tarnished. I bought a rebuild kit with all new gaskets and springs and bought new floats. While trying to remove the left main jet, part of the head broke off and I cannot remove it. The others were pretty stubborn but did come out. I cleaned out everything as best I could and used the air compressor to blow out all passages. I calibrated the floats within the 7/16 and 15/16 range and put the carb back together and on the car. No more fuel spilling over the top but it wont start. If I take the carb off and turn it over, plenty of fuel dumps out so I know fuel is getting into the bowls. I dont think the broken main jet would cause this but I may be wrong.