Two things. First after I've driven my restored 53 3100 and bed it down for the night, the next day fuel smell has entered the cab. Could it be comming from the vacumm operated wiper motor? If so how do I stop it? Second, I get a slight fuel smell while driving down the road with the airconditioning vent opened. The rear of the hood stayes up about 3/4 of an inch. I've looked for fuel leaks after driving the truck and see no gas leaking.