Look at your local hardware store for the rubber lip the sell for wooden doors. They used to all be foam rubber but the brand that Home Depot carries has changed it to a more solid rubber. That might work in your favor. If you can mount it to something to push against the door (I think it will fit similar to the previously mentioned plastic strips to the door frame). It might have more springy pressure than the plastic weatherstripping. Cheap enough to try (9' or 16' strips). Or turn the radio up. Then cut some wood, grind something, start your tractor up, etc. Then you will not notice it.