I just got off the phone with Festool support. He had me pull off the top way caps. One was loose and fell off in my hand, not sure how it was able to stay there before, and the left one took a screwdriver until the dovetail broke before it came off. Took the slider off and dry wiped the ways. I can see on the removable fence part that it is sprayed with a dry polymer lubricant and the overspray is all over the backside. Not worried about it, just an observation. There wasn't much on the ways as far as dirt, and then put the slider back on. It was still rough but I noticed when putting it on that it was smooth going down until the last half and then started to catch. The lock for the fence, right side lever, pushes a metal shoe with an upper pad and a lower pad into the slider to stop it. The slider was dragging on the lower pad. Eric the support guy had me remove the lever from the bolt head and index it one notch CW, that gave the little extra space between the shoe and the slider. No more dragging.
And he's sending me two replacement way caps. Now it's working and I'm a happy woodworker again. [wink]
I will say this about my support call: I called the number and selected two options in the menu, the phone rang twice and Eric, an American who even spoke English and sounded curiously like an American, answered. He didn't put me on hold, didn't have to talk to a supervisor, and had first hand knowledge and experience with my Domino model. I can't describe what a joy it was for such a simple thing. End rant here.
Wayne