95 Johnson Faststrike. What is purpose of the hole in bottom of bowl on the carbs that looks like it has some kind of check valve in it(steel ball). It looks like mine have silicone over all of them but the bottom carb. The one that is hard to reach. I have gas pouring out of it. Thought about putting a little JB Weld on it since the silicone is not gas friendly. Any suggestions guys?