Have been cleaning up some seat sliders, that bolt to the floor and support the seats. Drilled out the dimple, removed the rollers, and soaked/blasted/painted them. Still had significant resistance to sliding. Cleaned out any excess paint where the rails meet, and even compressed the narrower piece to slide better. Is there a particular lubricant to use lightly on the rails? It seems that the rubber and metal rollers should actually be carrying most of the weight- if so, do they get any type of lubricant? A little silicone spray perhaps? I also plan to put a rivet or bolt in the drilled out dimple to keep the rollers in place prior to install. Thanks for the help