It is a 2017 so not the schwintec but a bal cable.
Maybe look at bal website to see where to lube . Could also be a factory screw up bu mis aligning the slide??
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper
I use a dry silicon spray. You can get it at a big box store.
I spray the rails, gear rack, and the alignment tubes. I have an issue with vibration and squeal while the slide is coming back inward. The alignment tubes rub the receiving tube and cause this issue.
Some here say do not use lubricant however the dealers do use the dry lubricant on the slide tubes.