as far as locks getting corroded, i believe* the a little shot of the powdered graphite frees them right up. just go into a locksmith shop and ask, im sure they can steer you in the right direction. its been many many years since i had a messed up lock where i couldn't get the key to turn. but i believe it was the graphite that i used. never ever any liquid is what i was told, cuz its just like a gun, oil attracts dirt and crap. the graphite is very very fine and slippery. ask a locksmith they would defiantly know. and for my pin, looks like what V man has would do just fine. something with a nice good cap over the key hole, something durable.

