As far as rear top adjustments I just cut a 2" circular hole in my panels and it looks professionally done
Remember when adjusting these coilovers that you have seperated rebound and compression so by adjusting to a stiffer rebound resulted in a smoother ride prob means your compression is too stiff. The thing I loved about my kw's and that I miss with these hks is the ability for me to dial in the suspension to my likings instead of a preset...
hmmmm maybe I should sell my hks and get kw's with the hls system...