So long as it stays sealed you're probably going to be fine as far as things like evaporation are concerned. There was a story here a while ago
posted by some dude who now has a crazy beard about an H60 failing, but that's the only case of a CLC failing like that I can think of offhand.
If your temps are good, and there's no outward signs of a problem, then I wouldn't worry about it.
Do not meddle in the affairs of archers, for they are subtle and you won't hear them coming.