I previously replaced the pinion gear packs on my '05 dinette slide--both had worn out the brass bushings allowing too much play to engage the rack gears. Ordered both from LCI, you can find them on the website. I had to lift the slide to get weight off the gears in order to remove the gear packs. Am not aware of any replaceable parts, just the gear pack itself. Odd to have it go out on so new a unit. At the time I did this, there were 2 models listed--one reg duty, one heavy duty. I got the hd ones and there seemed to be more 'meat' to the new ones.
You might call Slade at RollingRetreats to see if he has them in stock.
Also, if you haven't looked at it, here is link to manual:
http://www.lci1.com/assets/content/s...de-out-web.pdf