Hey F550 5500 flatbed camper or custom bed owners:

I wish my fuel fill neck wasn't mounted in the side rail. You have to fill ever so slowly or it spews out all over your shoes. My pocket utility knife has a taper I slide in the squeeze handle to run so slow that everyone thinks its a hundred gallon tank. It's a pain. Better to have the fill neck angled more upward thru a side saddle tool box or some other way.