i heard this stuff works pretty well. im getting the savage 4.6 kit tomorrow and plan on dipping my electric (servo) components in the stuff and brushing it on my receiver. im gonna apply it on all the wires as well. i live in the desert and it gets really dusty and when it rains it rains like a cow pissing on a flat rock
i bought some for about $6 in the electrical section of the hardware store.
lets hear ideas for waterproofing. i heard that propholactics and ballons work well also for components..