I have PSS9's and would like to raise or lower the ride height depending on the seasons, occasion, etc...

How do i lower the spring pearches and ensure that they are even all around? I know that you just have to loosen the perches with the wrenches, but is there a way to measure to ensure that the car is level? Count the threads?

 

I think that the perches have graded notches on them. However, when you change the height, you will also need to get a new alignment. I'd suggest you just let the alignment shop do the whole change for you.