So, after much searching, I've finally been able to determine that my bedroom slideout on my 2000 Winnebago Chieftain is an HWH brand. I even found a reference to the IN and OUT stop in this document on page 14:
My issue is that there is an assembly held by two 5/8" bolts to the square tube that is meant to engage these stops. It appears that the previous owner had some problems and replaced these bolts with cheap ones from the big box stores, and they both sheared right in half. I found a handful of pieces after taking the bed out for renovation.
Can anyone give me an indication of what this stack of pieces should look like?
There is a nylon layer, a 1/8" steel plate, and some aluminum sheets. I have no idea what order they should stack in.