Thanks for your feedback all.
It is odd that the Dometic files do not even reference the existance of the MA40C model. I'll search the web for a while. If no luck finding a replacement of similar size - I'll have to search out a reliable refit company and get the cooling unit repaired or replaced. Does anyone know of a reliable Refridgeration company in Canada or northeast states?
thanks again - I'll be ice boxin it for a while I guess.