..mix one part automatic transmission fluid and one part of MEK or acetone together and clean screws with paint brush-wipe dry with clean rags....coat with silicone spray before retracting each time and you will never have a problem....or just use grease and get ready for a real pleasurable experience when trying to leave the camp ground after a long weekend....you never really learn to curse really good until the slide jambs or the screw jack jambs and you are stuck till MONDAY or later on in the week.....I have had to replace drive motors when they burned up attempting to work the slide in and out to get it to close tightly..........I charge $175 to do the labor part+replacement parts........one of the best systems has a bolt head that can be turned by a battery drill and closed up tightly....just a hint!....geofkaye
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