Spray some silicone lube into the channel, top and bottom, when the window is open. We also have double-pane sliders, and it worked for ours.
David and Denise, fulltiming since May 2011.
2011 Jayco Pinnacle 36RETS, Samsung RF197, 17.5 H-rated tires, Mor/Ryde wet bolts and X-Factor, Yamaha EF3000i.
2013 GMC 3500HD DRW 2wd D/A, Curt Q20, 46 gal aux tank.
