Hi - I'm not sure what model you have, but there is a good chance your '17 View's wet bay can be accessed by removing an access panel underneath.
Our '21 J model has a black strap underneath that is easily removed to allow you to get in there to see what is going on. Winnebago keeps other things in there too - (fuse for auxiliary solar, relay for tank heaters, electrical connectors ...) .
I've attached some photos of what our J model's wet bay access looks like. Once in there, if a leak is not obvious, I'd recommend wrapping some paper toweling on the PEX joints and then powering up your water pump and opening a cold water tap to get water circulating through the area. If you can't find anything weeping with the pump as the source, try hooking up city water and pressurizing things that way.
Once you find a joint leaking, you are in to cutting PEX and using a crimping tool to redo the joint. It might be a bit of a learning curve for you, but it sounds like you are already well on your way to keeping your rig away from a dealer.
Welcome to the Forum.
Cheers!