Maybe I'm just lucky or have some kind of superpowers (more likely) but I've never 303d anything and have never had a gasket problem. My drytops stay out in the shed in my paddle bag. This has led me to make the personal, and possibly erroneous, conclusion that 303 is a waste of money. Take it with howevery many grains of salt you wish.
I hope in the future Americans are thought of as a warlike, vicious people, because I bet a lot of high schools would pick "Americans" as their mascot. -Jack Handy