My kids inherited my much loved 1970's classic orange Construction Truck 3203. It had a crack in the windscreen, and the other night I found a large portion of the yellowed, brittle windshield had cracked off.For nostalgia's sake, I'd like to repair it. Does anyone have any experience, suggestions or gentle guidance? Is the part even available?http://www.collectobil.com/catalogue/items/3203x.htm