I realized I posted the wrong images yesterday, and have corrected them. As I noted after adding the round mufflers by the tank I picked up some drone at idle. I actually took a third step by wrapping the UF under the floor boards, and it reduced the drone. Here is the result by the drivers side rear wheel well after the wrap. Basically I discovered that a fair amount of sound emanates from the muffler case itself, at least with the straight thru design.
