Recently purchased 1976 E 29...while getting familiar with systems etc..noticed freshwater tank was not plumbed for deck filler port...ok..perhaps P.O. disconnected it for some reason..I've discovered other "wierd " things he had done..went top side to find the filler port thinking no problem I'll just reconnect the tank...3 laps around the deck and no filler port to be found...only gas..not even holding tank pump out..WTH??..the holding tank is a non issue since I've abandoned that for a composting head...I would like to use the freshwater system ...also..I had to install a city water inlet as well...again..WTH??!!....any comments or suggestions would be greatly appreciated..thanks!!