IMO may not be old enough for track replacement unless you see damage. Most like rollers are dirty/stuck and not rolling. Depending on how long and how much use how long been stuck will determine if need to replace them? If you have my style sliding door and can’t get them to roll by cleaning and adjustment you have to remove door take lower frame off to get to roller bracket assembly if it’s like mine? Not that hard but very heavy and awkward.
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