So I had let a friend of mine borrow my KF30 since I didn't need it and she gave it back after her DS had outgrown it (before a year old). Now I didn't think an infant seat could get all that dirty because I never let my less than 1 year old eat in it, but apparently she did with her DS. The straps are gross, stained, and crusty! Can I buy replacement straps for it or am I stuck with trying to clean them (which I'm not sure would be possible without saturating them!)