I'm having issues with the "new" Holley rebuilt Rochester carb on the 235 in my 58 HellRay. I can get it to start, but it is pumping HUGE amounts of raw gas into the intake. When I first mounted up the carb had a manifold leak, and it spit back through the carb pretty hard. Does the BC have a power valve that will blow out when it sneezes back through the carb? I haven't torn the carb apart since it is SUPPOSED to be rebuilt, so I haven't checked float level. What gripes me most is that I bought the rebuilt carb because I couldn't get the original carb to stop flooding...this one is even worse than the first one.