Mike Harrison wrote:
snip
Any metal will corrode rapidly in the combined presence of moisture and a few volts.
I would suggest a 'one time repair' by using plenty of silicone sealer when you put it back together
- you probably won't be able to get it apart again but it should last longer....

As an alternative - hot-melt-glue may be handy.
It can then be dissasembled by heating to 70C or so in an oven.