You have an avis style adjuster and not the same one that I have.
I haven't used that style of adjuster before but from what I can tell from seeing pictures you will have to loosen both the jam nut and back them off enough so that you can move the top serrated piece down on the beam to lower the suspension. Sorry for the mix-up.
__________________
I love my money pit, uhm, err, I mean my car.
1969 beetle in the works... 2.0 type 4 DTM...
2004 Suzuki GSX-R 1000
crashed
www.volksport.net Volksport Kfer Gruppe