I messed around with mine at Cadders last year but I had a very worn out rear as well!
I turned it to try to reduce wheelies over the mountain it, apparently it don't do that
Also noticed that coming out of corners such as barn, it just kept on working so turned it down and it was much better but then found it was the tyre sliding around. Unfortunately never got to try it again nextday with new rubber as it broke
On the road it usually comes on when there is some grip issues such as gravel and slippery surfaces but still almost had me off outside Loomies, but reckon that was more cold tyre as it was January