Old Greenhouse Revival

My old greenhouse was basically useless as weather gets warmer. I could not keep the temperature down, the plants wilted, even with the door open. The vent on top had a hinge, but I could not open it. I thought of hiring a handy person to replace it, but could not find anyone for such a small job. I spied my can of WD40 on the shelf, so I decided to give the hinges a shot. A few openings, and she now works like new. And now the temperature is dropping, and my old greenhouse has new life!