Roger that guys - I read all of that as well - There must be a way to fill the fresh water tank with a bucket of water somehow...
I was hoping you found a hidden door somewhere with a manual fill cap... There is no reason to have a one way valve for a manual fill cap.
I was looking at some 2014 Forest River trailers photos on google and did see one with a fill cap on the side of the trailer so I know Forest River still uses the manual fill cap on some of their new trailers. Guess the VIBE serious must have a new plan of attack...
Give Forest River a call with your VIN NUMBER I reckon...
Roy Ken