If I'm not mistaken, when you lower the ball, you're going to lose some tension on the bars. So if your weight distribution is appropriate at the current setup, and you drop the hitch ball down some (to get the bars more level), you'll also want to add a washer to tilt the head a little more rearward to retain that spring bar tension.
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!