[A/S] 1978 sovereign rear bath help

["pennkne" <pennkne@xxxxxxxxx>]

we recently acquired a 31 foot rear bath sovereign, it has a suburban 
furnace, the previous owners had thick carpet and padding installed, 
but apparently no  one knows where the heat ducts/ grates are 
supposed to be. The airstream is set ip on a perm.  site in the 
mountains of North Carolina- we need the heat right  now and am 
hoping someone will be able to help  me figure out where to cut the 
carpeting so that I can have heat  for my  65  year old Mother who 
will be using this. Any advice or help  will  be appreciated as I 
have  no idea where to begin.
Thank  you
Pen