Closes very slowly the last few inches. I'm wondering if its hangin on the rubber gaskets. Hesitates then closes slowly the last 2/3 inches. Anyone have this problem?

 

You could try opening the door and then open/close the window. That would show you if it is something internal that needs lubrication or if it is a door seal.

 

There's an adjustment bolt under the door panel that holds the window regulator assembly. By loosening this bolt or nut ( I can't remember which) and adjusting the angle of the window regulator assembly you can find at which angle the window operates best and re-tighten the bolt to hold it there. Sometimes it travels a little with age/use and needs re-adjusted.

After an accident, my father's XK had an an aftermarket door put on with the guts from his door. He had the same problem and I was able to clear it up by adjusting that bolt.