Andersen Ultimate not working for me

Interesting, I have mine installed with the ball adapter placing the ball behind the kingpin because the back of the kingpin arm hits the tailgate if I install it the other way. Luckily I have the cutouts in the nose of my fiver so it works out pretty good. I'm running up to North Dakota this weekend to tow the kids triple axle Presidential Suites rig down to Wyoming so I'll get a chance to try a different configuration soon. Hopefully my experience works out better than yours. The son in Laws 5er doesn't have the rounded nose so if possible I'll be setting up the hitch the way you were just using yours to get as much cab clearance as possible. I'll let you know how it works out for me, but that will just be as a point of interest as it won't have any impact on how your setup works for you.