Fuel tank fill problem
Bought a fully loaded 3210 in October. Had the same fuel problem. Figured it was the vent tubes, since they are so low. I simply forced a 1" x 2' plastic electical conduit between the cross members and the two vent tubes to force the tubes up in the middle. This keeps the fuel from laying in the tube or that is what I think it is doing. Anyway, problem solved, can fill both tanks. Another thing I decided to do to make gassing up easier, I keep a 14 gallon plastic transfer tank in the back of my dually TV and use this to fill my tanks if I run short camping or dont want to go thru the hassle of pulling up to a gas pump with my total lenght at 52'.