Jon, are you stating that you have to hold the nozzle tip in the tank inlet and gently pull the trigger on and off?
I have a 232 gallon tank that goes completely across too. The inlet openings are 2 1/8", and angle out the front top corners. There is just enough room to put the nozzle in sideways with the handle facing the rear of the coach. It is tight, but I can put the auto and not have to hold it. hmmm...? I will have to upload a pic and compare maybe?
The one thing good about the scenario, is it is tough for a thief to make progress.
Ken W.