Picked up my RV Sat and looked through the paperwork in the camper and noticed the solar was not the Keystone Solar Flex, but rather they installed a Go Power Solar System. WHY? From the Camping World Dealer? Should I have them switch it? Can I add up to 600 worth of solar on the roof with 3 panels and can that controller hold it? I also ready it can work with Some Lithium Batteries so I feel already limited.. First Time RV'er.