You might see if the vent hose is routed on top of the filler tube all the way to the tank. Mine was beside and below the filler tube. I disconnected the tube from the tank routed it on top of the filler tube. I had to cut about 2-3 inches off the hose. It seems to have helped.
Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 36' FDS 72232 Our Photos
We live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, me and you - hand in hand.