I've read a few strings on this. Seems some gens have the issue too. I think it's inevitable, but you can prolong it by being careful and doing the steps I mentioned in the earlier string. Although there are some who have had their reps a long time with no problems.
Sorry, I'm fairly new at this too (5 months) but I spend a lot of time on RWG reading. Sure doesn't make me an expert though.
I have five watches now, and more on my list!!!!