Hobbsy - looks like you like doing it quietly too. Nice to see. Those Davis Diesel mufflers aren't cheap, but they sure do the trick. I've even got their biggest can on my G-62. I notice that usually threads on quietening things down die a quick death - no interest I guess... until flying fields are lost. Too bad as only a little effort can bring remarkeable improvement with little power loss. Personally, I find it less stressful and more enjoyable to fly quieter planes. I certainly can see the beauty of electrics, but I like engines! Nothing worse than some guy with a loud engine tuning his screaming beast in the pits.