Heated Underbelly 3950?

[PUG]

I live in Idaho and it can get a bit cold. My 3950 is suppossed to have a heated underbelly. I have had some of the black covering off underneath and see no ducting for heating of the underbelly. I have also noticed several holes in the frame etc. and gaps in the black undercover that could leak a lot of cold air. How is the underbelly heated and what can I do to seal it better?

 

[fjspinelli]

I have the same concern and will probably go get some expanding foam to solve some of the problem.