Is there a way to re-new an air filter? I have a Stihl 026. The filter body and choke flapper are usually fine by the time the flocking is dirty and clogged. It just seems like such a waste to throw the whole unit away because the element is dirty or split. I clean them up but after time, the flocking tears a bit. Sorry if this question has been covered before but I couldn't find anything in searching. Thanks!