OP here, I do NOT have a Honda or Yamaha, This is a Onan 2500 that is in a compartment in the camper. I cannot move it without the camper. The exhaust comes out about 4 feet from the slide. Camper is an 2012 Adventurer 980 rds.The co detector goes off when running the Onan generator. I will try to do some foreign engineering with a piece of greenfield electrical tubing and some muffler wrap. Plastic pipe would be nice to work with but it would probably melt. I don't know how to post pictures but I'll try if and when I get this rigged up.