Chester & Ed: I won't lie and say that shooting WD-40 in there hadn't crossed my mind... I pretty much crossed it off my list, though, mainly because my key would get all oily, which would, in turn, make my pants all dirty.
Kip: The keys don't have numbers. The two new ones were made off of the old one -- which is also a copy. I haven't pulled the cylinder yet to see.
So... I guess that it's off to Hampel's with me... Do I pull the whole assembly, or can I just pull the lock cylinder and take
that in?
Thanks for the advice, everyone! It is appreciated!