So my KW Variant 2 suspension has finally settled and wanted to adjust them in the rear. I first though of welding something to the black piece that everyone complains about slipping, but then didn't want to fiddle with disconnecting the battery and possibly damaging the suspension metal.
Looking in the toolbox I found a 3" C-clamp. I clamped it down with only a little pressure on the black collar and it worked like magic
. It didn't spin at all. I was able to adjust both sides very easily. A clamp is all you need to hold it in place. The 3" was a perfect size were it would connect with the walls around the suspension and prevent any spinning.
Well I hope this helps everyone that has been angry about the poor design in this great suspension. Here are a few Iphone pics just to give you an idea where I placed the clamp. Good luck!