I have one by the dinette area that seems rather sticky. I would be very hesitant to use grease for reason mentioned above ... collects dirt.
I thought I might try some silicone spray and see if that helps. There seems to be plenty of clearance so that is not the problem....just sticky.
2012 Fun Finder XT 276 Toy Hauler & Harley Davidson Ultra Classic with Condor wheel chock
2014 Dodge Ram 2500 AT 4X4 Crew Cab 6.4 L Hemi, 373 gears, tow package, Rambox option, Revolver X2 tonneau cover, Equal-I-zer anti-sway hitch.