Because it is "very" difficult to adjust these once they are assembled with the springs; particularly the front I preset them as follows;
10mm of thread exposed below the lock ring at the front and 20mm of exposed thread below the lock ring at the rear which drops the gal’s approx 1" plus a little at the front and 5/8-3/4" at the rear and then once the process is completed the toe will need to be tended to.
If you look at some of the gals on my website you can see the results.
Call or email me if I can assist
Takes care
Shadowman