I'd take care in the cleaning process, the cloth is difficult to clean, the silver covers on my 4000's didn't really clean up perfect, but i put them in the sink with luke warm mild detergent water and a soft sponge. If your using the hair dryer put it on a low heat setting because you don't want the glue to disintegrate. If it's sunny over there lay it upside down on a grid or a towel in the sun...
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