Working with a friends 235 who has had rather severe charring damage to the underside where the exhaust pipe goes past the underbelly. The damaged area is "V" shaped, about  6 " long and  about 3" wide with the apex of the "V" pointing rearward.  Has anybody come up with a soln  to this type of damage, certainly bending the exhaust away from the body is a partial soln, but some thin "Space Age'  material must be out there ?? Don Skeele (503) 769-2563