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Old 04-28-2015, 05:24 PM
  #334  
jerryj39
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I had the same problem. The tubes in the muffler that the bolts tighten down on are to soft, they get barrel shaped and you can see the side of the muffler caving in. Had to tighten bolts after every flight. The way I fixed mine was to use a stack of fender washers, small to big so they tightened down on the outer edge of the muffler. I may have used longer screws, don't remember. I think I put a spacer like a wheel collar where the head of the original socket screw was so it could tighten against it also. The good pitts mufflers use a shorter screw and do not crush the tube. Would send a picture but cowl is on. Bottom line AGM pitts are pretty and shinny but are crap.

Last edited by jerryj39; 04-28-2015 at 05:45 PM.