After cleaning out my VC Defiant 1945 (newer cat model) I found about 2% of the cat honeycomb has fallen out. So what now? Leave it another year? Replace because this means the Cat material is shot? One other question since buying a part from VC is not an option where can I find a nice replacement catalyst? I know I had seen a lot of the answers in the forums past but a search did not give me any results.