casaverde2,
Same here as the others. Mine looks low but it has yet to drag on the road and I have been in many "interesting" situations.
Since the exhaust comes out the bottom of the gen cabinet, a 90* radius bend needs to be made to route the pipe to the side of the coach. So the depth of the bend has a bit to do with the fact that the pipe hangs low. That, and there is a minimum spacing below the surface of the underbelly that must be maintained from that hot exhaust pipe.
Our experience says you should be okay in most circumstances.
Enjoy that Pinehurst. I have a bit of a soft spot for that floor plan
Jim