You will need to do a little investigating. Pull the slide out about 1 foot, pull the slide seal down and look under the slide with a light. If there is what looks like a polymer bar about 1/2" tall across the width of the slide you have a wear bar. If you do, the first thing I would check is the adjustment of the cables. Do a search for slide cable adjustments and you will find lots of info. I believe the installation and maintenance manuals have both been posted on here. If you don't find what you need post back. Good luck.
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