OT: Getting the rollers on a Deskjet cleaned/oiled?

Can this be done somewhere? Our Deskjet 990cxi is acting weird lately. It's so good and has been so trusty (and I don't know anything cheap and comparable that works with Linux out of the box) that I'm hesitant to just throw it away and get a new printer. However, I want it to work correctly. Do you know where you can (if you can) get something like this worked on these days? Preston