The rubber boot on the slow cut valve on the carb I'm rebuilding is toast--crisp as a potato chip. Forking out the dough for a new slow cut valve is going to make this carb rebuild pretty pricey. Anyone have an ideas on replacing the boot? Someone has suggested fabbing a new boot out of the tip of a pump boot, but was not trusting of the way he attached it (electrical tape doesn't hold up well to gas fumes). How important is this boot? If I just smear it with grease, will that keep the big chunks out of my engine, or is that just asking for trouble?