HP 97 replacement printer cog?

[Dave Britten]

I just got an HP 97 that seems to be in good working condition electronically, but it's got a couple issues that I was expecting to have to fix. Obviously, the card reader wheel is gummy, and I've got replacement o-rings on the way, but the middle of the three printer cogs has some stripped teeth and needs to be replaced. Anybody know where to get a replacement for this cog?