I have a 1850-s carb, 600 cfm vacuum sec. manual choke. It's about 4 years old. It has run real well up until now. My engine won't run basically at all. It's dumping raw fuel through the engine and even out the exhaust. We got a rebuild kit and i just went through the bowls thinking the float was sticking. So I put in the metering rods and such. One thing i did notice and am not sure of. The spring on the front float seems real weak compared to the rear bowl. Is this normal? Has anyone else run into this problem?