Slipper clutch setup

[Rumbl3r]

Hi all

Could you give me some tips on how to set the slipper properly? I get the impression that depending on the surface you set it so that there's no 'audible' slip but not so tight that it pulls wheelies?

I have it set this way on a loose / grass surface but if I put it on concrete you can hear it slip. Is it right this way?

This is on a Cougar KD if that makes a difference.

TIA
Derek