Have 2 of the same horn and want to store one if them long term. I thought about after thorough cleaning to store it completely apart. Maybe put slides in and parts in separate air-tight baggies and grease them up to prevent corrosion. Same with valves with oil. Seems like this might be better than typical clean, grease, oil and put together where over time things can get stuck, etc.. Also have a good air-tight bag for the horn itself. Ideas?