[dannymarilyn]

that seal is a high temp exhaust packing rope.  and used with antiseize 

the rope goes inside the flare of the sliding pipe. 

i would check for any other exhaust leaks at the genny as well. 

my experience is that wall on the back of the genny is not likely to be your culprit.  but that doesnt mean it couldnt be. 

tom

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Dear Fellow Gurus, I had Newell repack the joint on one of our visits and the problem mostly went away. I don't like being under the coach, much and Newell's pit bay was too convenient! deg