Angled propane fill elbow? Rubber hose?

The propane fill in my ERA 170M is a shade too low to the ground, and the large pistol-shaped feed device used at Flying J's can't quite make the connection without the ground interfering.

I don't really want to muck with the mfg's installed propane system, I'd like to find some kind of flexible or angled adapter that I could install.

I'm pretty ignorant of propane based technology (I'm a charcoal man, myself...), does such a device exist?

Thanks for any advice you can offer.