Does the window grease streak really eventually go away if you choose not to bring it in for the TSB? And, I just bought the paint/clear coat touch-up pen from Courtesy Nissan. Since my Z has layers and layers of wax on it, what are you guys/gals doing to prep the area before touch-up ? I could have used the "search" feature. But I didn't feel like reading hundreds of messages that contained anything to do with " window grease streak " and "touch-up paint" Guess I'm lazy tonight.