The other thing to consider is after coming home from the desert. I spent 2 weeks in New Mexico many moons ago and had a minolta SRT 101. After returning home every dial, botton, and lever would grind when it was moved. The camera had to be cleaned by a proffesional repair person. If the sand is not cleaned out from the mechanics of your equipment it will act like a grinder and just chew your stuff up from the inside.
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