Isn't there a fairly new Winnebago plant in Oregon? I thought I read they are in the old Country Coach facility in the Eugene area. If there is, just show up if you've got some time to get worked in?
I suspect others that have been through this can tell you what the best course of action is. These Power gear, in wall slide assemblies don't seem much better than the Schwintek version. Good luck.
Bob, & Leah, USN Retired
2016 Itasca Suncruiser 38Q
2014 Chevy Equinox LTZ/Blue Ox Tow Bar