There's a 1000+ thread on the Open Roads RV Forum under "Tech Issues". Looks like what I'm going to do is the suggestion to get the Power Pro 5500 from Pep Boys and then make an adapter using Harbor Freight parts + a male RV plug. The two 110 outlets are already "parallel" (the cheap 3600's are not and folks are having to rewire the outlets) which allows the adapter to plug into both at once keeping the voltage at 115 but doubling the amperage (I think to 46 amps). Go
HERE and look for an entry by "HATCH - TX"