I ran into this same issue. I put on BA arms and 28" zilla's on the stock 12's. I like the ride pretty soft, so I was on the inner hole about middle preload. I ended up having to get a highlifter 2" lift and only lifted the front. I installed the brackets to the inner side which is opposite of what the instructions call for, and left preload in about the middle setting and all is well. Ranger sits about level with the rear in the inner hole, about middle preload.