2016 Via Gravity Fill Leak

[JTR]

My 2016 Via leaks where the gravity fill line attaches to the neck of the tank. I'm hoping someone here can give me a fix without having to drop the tank. The leak can be "Felt" but not seen. Hoping there is a clamp that might need tightening.

[Morich]

This is one where we need more info on exactly which 2016 Via you have as there are five different versions if we include the different build dates.
I took a look to see what parts are involved and found at least three different setups for where this tube enters the tank, so we will need to know which you have to make the best suggestions.
Some have gear type clamps, while others don't! That makes the fix vary a lot as it may just need a new metal seal?? Any signs( or feel) of a metal seal that might just need to be tightened?

Next to the driver's seat, there should be a label that gives the serial number and build date, if you can sort out which you have?
Click this snip to see better!


Parts catalog here:
https://catalog3d.winnebagoind.com/menu/Parts.htm