Also the hardware (bar hinge) is getting a little stiff. Is there a grease or wax product you sell to lubricate the metal track (that the short peice of plastic on top track and bottom) slides back and forth on during opening and closing? I have used white lithium grease but it is quite messy. Would prefer a longer lasting and easier to apply product. I am attaching a photo of existing bubble seal. thank you ..Geoff
