TL;DR. Better results. 28 gals in 21 minutes with manual fill at Walmart. Big storms in Tennessee but cool and drier today. Will schedule a dealer service when we get back. Thank you for sharing your experiences.
Apologies for not posting yesterday. It was a long, stormy day in places and we didn't get to the campground until late. I was too tired to "internet".
Yesterday's results however were decided more positive. We were able to fill up twice. 28 gals in 21 minutes at a Walmart Murphy station. Still had to hand feather the fill lever with moderate foamy back ups. The 2nd station we stopped at was just a small independent but we were able to get ~36 gals in a "reasonable" time but very minimal foaming.
The difference between the Walmart and the independent station? Walmart was B20, 5-20% bio-diesel, and the no B number. Does the bio-diesel by nature produce foam? Maybe a B sticker at the 2nd station was missing but it was a curious difference.
I have some video of the first fill but I don't want to beat a dead horse. From the discussion here I think I just need to visit my dealer. I have some other minor fixes so when I get back, time to schedule an appointment.
Thank for sharing your experiences with me. I'll post any findings after the dealer looks at it.