I believe that system uses teflon blocks as slides. They do break and work out over time. Research this and other forums. There have been several postings on how to replace those blocks,
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Sold the Motorhome, joined the fully retired gang. '07 Winnebago Journey 34H, ISB-02, MH2500
Toad - '08 Ford Taurus X, Blue Ox, Aventa
US Gear UBS
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