microDan

I ran it pure stock on a grassy field & baseball field. It was bouncy as you say the rear spring needs heavy oil and more spring preload. And the head shake as it hit little divots of grass and such made it look like a wheel wobble machine. On the dirt infield it just cuts a groove in the dirt for the whole length with the rear tire
I used 1000 wt diff oil, stretched the spring about 1/4" used a TT spring spacer and moved the shock to the first hole in the frame.
It's much better now but not perfect. The suspension is just too soft from the start. On road it goes good no matter how the suspension is.
I have not ridden off road since installing the steering damper. I'm sure it's going to make a big improvement as it did on road.