It's a bit of a drive to get to the op that sold it to me, so I figured I'd just fix it myself. Then again, I'm sure he'd be happy to mail me a replacement lock. He swapped out the locks because he didn't want me to have his master key.

I'm sure the one I got is old, sticky, or was temporarily bound up. I'll have to play with it to find out. Once I got the legs on the table, I just left it unlocked and have been playing it instead of with it. So I've made no progress...
Thanks for your help. I'm new to these tables and learning. Next step is to learn how to convert it to free-play.
-pmc