A few months ago I purchased a 05 YZ exhaust silencer on EBay, (brand new for $43) and today finally got to bolt it on. It took a whole 15 min and fit perfect. Definitely more power but a whole lot more noise. My WR silencer had the first internal baffle cut out and a PMB insert. It ran good but not like teh YZ can. My question is: Has anyone ever pulled the tail end off the YZ silencer and the riveted the WR endcap on. My thoughts are these. I'd have a more 'tuneable' silencer and may be a little quieter. Could go from spark arrestor and PMB to no arrestor very easy. Could also go w/o PMB all together. It looks like it'll fit but have I missed something?