Joe,
Finally, a little success! I found my machine oil, used the hair dryer some more, and the gear is moving now! It's far from moving freely, though, and takes quite a bit of elbow grease to advance it, but it advances! I don't have any gun solvent to clean it ... Should I just keep "working it" , in hopes that it will loosen a bit more? I'm concerned that if there's gunked up oil, it will never work properly. Any suggestions? Thanks!