When you put the covers on did you put soemthing on like locktite or rvt or whatever that stuff is or did you just reuse the stock gasket or what? On mine when i installed my bl there was a hose thats called a diff vent hose that went along with the fuel fill hose.. If you remove the rear driver tire wheelwell plastic there you should be able to see it ziptied to the fuel hose. There is also one in the front thats mounted on the drivers side of the radiator. The pipe it self is rubber pipe with a clear to white color cap on top of it.