I LOVED this seat.....but its expiring in July and we dont fit it anymore anyway, so I guess it's got to go. It breaks my heart - the seat still feels more solid than many I see out there. I really wish I could give it to our local family shelter but I imagine that is strictly not ok. Is there no situation where an expired seat is acceptable? What should I do with it? Aside from the cover, are any of the parts still usable?