Slide Out Pieces Falling Out

[jamwill]

Sorry if this has been posted before, but I'm a first time pop up camper owner and just recently purchased a used 2018 10SD.....and I'm hoping I haven't broken something.

When we slide out the beds, we're noting the white inserts that dont appear to be staying with the metal frame. I've attached a picture to better illustrate what I'm failing to describe.

Should I be worrying about those white things? Are those items that are okay to remove? If not, how should I put them back? Any advice appreciated.

Also, for the new guy, any threads in here on how to properly maintain this thing (lubricating things, cleaning lines out, etc).

[mokurt]

The white plastic looks like a slide so there is no metal to metal contact.
I would put some crazy glue on the plastic and push it back in flush to the end of the extrusion.
Or put a short screw in from the top to hold it in place.