The Upscale suspension mods do not improve slow speed rocking. They may make matters worse. I tested a '08 NJ with Adjustable Air Bags (100 - 5 psi), Heavy Duty Koni - front & rear, 2 rear sway bars (front & back of rear axle), Helper Spring Assist and Steer Safe.
The side to side rocking is about 25% lower in my '07 NJ. Still, the rocking in my '07 NJ is awful! I also have Koni shocks. The blue waveforms show side to side rocking. Both rock at the same frequency, 1.2 Hz. The '08 NJ air bags are set to 70 lbs in this test. There's almost 1 g-force of peak to peak rocking when the '08 NJ goes over a typical speed bump at an angle. There's enough rocking to open the upper cabinet door and dump contents out. One doesn't notice the rocking that much when sitting in the well suspended front seats, but when in the back, it's one hell of a ride.
It's clear the Konis aren't doing their job damping the oscillation. It's also not certain Upscale adjusted the Konis before installing them. I purchased my Konis from them. They told me at the time of purchase that they were set to the correct rebound adjustment. I believe 80%. After some accelerometer testing on my MH, I decided to remove the rears and check the adjustment. To my surprise, they were not adjusted at all! They were at the min setting. Just a word of caution for those who bought from Upscale.
Cal