Schwintek slide problems wear and noise

I have a problem with the schwintek slide. It is retracting evenly but on the top track I am starting to see some wear. I keep the slide tracks lubed with PTFE dry lubricant but seems the rig still has high wear. Anyone have any thoughts on adjustments or anything I should be looking for?

I hate to say this but have you brought to a dealer? It is possible something is out of alighnment? The other option is fully retract the slide but hold down a few seconds. Then push the slide in and out by only go 3 to 4’ feet at a time.

See if that helps.