Our new-to-us 2007 Sandpiper 5th Wheel has one slide out. We have no experience with slide outs, so need maintenance advice. Just had a RV shop adjust the slide & treat the seals, but we notice the rails underneath feel rough & dry. Should we spray this stuff on before closing it up for the winter here in BC?
If there’s a section in this forum for regular slide maintenance, pls let me know.