In my 94 Liberty Elegant Lady the genset has had issues PRIOR to my purchasing it. I believe it is a 17.5 Power Tech BUT cannot find the SN tag only the filter numbers which go to many other thing. So my questions are: Has anyone replaced the complete unit? Where was it done,how much was the unit and installation? How long was the process? My shop and I believe that the crank is broke. The unit is old and was not maintained as I prefer to maintain my equipment so I am looking at replacing the entire unit? Any thoughts