Interesting to read this thread.
I just bought a new W, and within a week the grey tank cable froze up. It became very hard to move it at all. I looked under the back end, and saw that the grey cable was not properly tied up, and had at least a couple of feet of excess length in it. It had dropped down and rested on the exhaust pipe of the generator. Of course the cable melted through when I used the generator. Now I have a grey tank valve that's stuck open and another 1200 miles to go before I'm home.
The W is an amazing machine, and I am very happy with it, but FR really needs to fix this problem that so many owners are having!