<!–more–> http://I live MINUTES from astrophysics. I know Roland and the gang there. …He will fix it regardless of whats wrong. I would only guess the reply would be to not leave it out in the moisture. I have a fan on 24/7 in my dome to keep air circulating. It also keeps spiders out if its cloudy for a few weeks.
If I had a mount like that I would make a small box to wrap it in after image session is done…then bring gear inside the next day. Kind of like a steamer trunk on its side with wheels, and a bottom cut out for the tripod or pier.