I've got an Aussie style hat that I love but which is definitely not properly sealed on the seams. I hesitate to ask this question but it is serious. How do I wax the cracks and with what? I'm Ok in a light rain but a really heavy rain starts to leak through every where. I would sure like to keep my head dry inside during a total down pour. I don't think the subject of crack waxing has ever come up on FAOL before. Thanks for any suggestions. 8T