A lot of the adjustable bushings have labels on them etc to let you know where they are.
The best bet is to put them in zeroed out... and have the alignment shop go from there.
Most shops have "Special" kids working now that can only use the alignment machines that are completely computer backed...
Easier to tell them you have a 4 degree bushing thats zeroed out, as the computer tells them how far to turn it and all that good crap.
When they find out that you need a different bushing or something like that after some time of fiddling, all it does is add to the bill...
The only reason I even recommend atleast installing the bushing yourself, is you can never-seize everything, and save on the time it takes them to put them in for you.|
Definitely changed and broken my suspension and steering enough in one year to have 5-6 alignments... most of them are just done with the tape measure now.