I think he was probably referring to the wood trim on the sides of the bed near the vertical exhaust stacks. Unfortunately that previous owner (the one who did the restoration) has passed away. Personally I think he didn't like the loud exhausts from the vertical stack so he had that BS out the back exhaust system installed. Those exhaust stacks surrounded with their stainless steel heat shields do not get hot enough and are not close enough to affect the wood trim on the bed.