Hello, I am working on a carb (FCR39) off of a 2004 WR450F. It has several vent lines. I'm going to block the ACV and was wondering if that would let me plug off some of the vent openings at the carb and clean the area up some. There are two vents directly above the ACV and two directly opposite on the other side of the carb, (I'm guessing vents for the hot start or choke maybe)? I know the fuel bowl needs to vent, but what are all the others for? I'm going to post this in the jetting forum also for better coverage. Thanks for any information.