Well its back up for sale again. Like new Dolmar 6400 with a clean muffler mod. Saw is still on its 2nd tank of fuel and is in perfect shape. I heated the muffler rim with a brazing tip and bent it out so I could gut the cat. I left the baffle in place for structural stability and reheated the rim to close it back up. It is not a dual port muffler and it flows really well. Saw has been run on fresh e free 91 octane and stihl ultra at 40:1. I richened the high side up about 1/8 turn after the muffler mod but I did not run it or fine tune it. I just started it so I could hear its new sound. I'm asking $475 PHO plus shipping. If you have any questions, feel free to ask.