[walker]

Easiest way is to remove the rear window. You just pull the lip of the window inward and push the glass out. It takes three hands to do it though. Then scrape the tint off with several new, sharp, razor blades. Apply the new tint and reinstall the rubber on the window when good and dry. Then put a piece of 1/4" rope in the window groove all the way around and overlap a few inches. hold the window up in the hole exactly where it goes, don't fudge it up or down. Gently tug the rope from inside the cab to reseat the rubber lip. Two people is a must. May consider just buying a new rubber and cutting the old rubber if it is hard.