Yes I searched..without success................. Ok I have a 2002 YZ426F with a stock pipe, and a pro moto billet end cap/spark arrester that I run supermoto events with. 4 trackdays ago I was performing some regular maint,oil chang etc.... I noticed that the front of my muffler was loose and the rivets were also loose. I decided since I had never repacked the pipe might as well do it while I'm here. OK took everything apart and found a mesh screen with what looked like steel wool under it and around the pipe core, also the normal fiber tpye packing material around the outside of the mesh screen. all of the outer material was pushed to the back 1/3rd of the pipe. I discarded all of this packing material. Went to my local dealer and bought some O'neal packing. I then wrapped the packing around the pipe core and re rivited the pipe. Now 4 trackdays later.....I have zero packing material in my pipe?? Also all the front rivets are loose again?? Is this normal? should I have kept the mesh screen/steelwool looking stuff? Have I hurt my bike? What should I do to fix this issue? TIA:worthy: :worthy: Sorry for the long post.