Definitely sounds more of a climate problem than anything else. My Encore has never showedsigns of rust or corrosion in the trigger assembly andit gets pretty humid here in Missouri too. Some years back a friend suggestedsomething that I have done since, that is keeping the "stay-dry" packets that comein the packaging of most everything you buy these days. Ikeepthem in all of my gun cases andcheck my gunstwice a year. Never had any problems with rust or corrosion yet. I also keep the "stay-dry" packets in the cabinet where I store my ammo and other assortedsporting goodsas well. Seems to work for me.