I need some idea on how to break up the catalyst material. My converters came apart a long time ago a little bit at a time. I currently have a piece stuck in my rear muffler (aftermarket tiny muffler) just before the tailpipe bends 90 degrees and exits. Basically I'm looking for an idea of what to use to break it up. It needs to be flexible and firm. I have tried a coat hanger and a thick stainless steel radio antenna. This is on my D90.