Wow, it is bit more but not limited to the following:
You first need to verify your garage floor is level, if not, get some rigid vinyl 12"X12' tiles from home depot. I used a HF 6' level and my digit level on top of it to verify zero. This part IMHO is the most critical to obtain proper readings. Mark the floor where tires need to rest, if floor is not level. Oh yeah tires, properly inflated as well.
I used the string method and made a camber tool using modified digital level to fit my 17" rims. I am assuming you do not have HTH fancy laser tool so you now need to verify your rims are true or you will get false readings, spin them to check for hi & lo spots by using a hand drill to prop it up and place the tip against the rim ( use blue tape if you do not want to scratch the rims ) tape off hi and lo sections, you want to measure in the same spot 12 & 6 o'clock or at least in the same sections always. Write down your readings.
Now the fun part
Raise the car, use jack stands always for safety and to even out the car's rear and remove the wheels, spray the plates with some light colored paint at the side ways wide U and at the 2 adjustment nuts, allow it to dry then use a sharpie and mark around the U and pick 12 o'clock on the two nuts. This is now your 3 reference points of your current settings.
You need to remove all load from the rear arms, unbolt the sway bar and struts. Loosen the two lock bolts but do not remove them then the adjustment nuts.
You are now ready to make your adjustments, write down your goal settings, it will take many times for a first timer, ask me how I know but I have OCD so I could not tolerate but less than exact goal settings, if you are okay with +/- you will finish earlier. But keep a log so you know you are going the correct direction.
I helped my buddies '86 in 12 tries, amazing
. I suggest 1MM increments to get a feel of the results and readings. Remember the 13MM allen bolt is eccentric so once you hit the limit it will drop/loose extremely so, just be ready and do it again. Oh yeah, adjusting one will affect the other so you have to adjust both, for example, let's say you got your reading and then find yourself needing more neg camber, you must adjust for toe as well. Think of the adjust line as a diagonal not just horizontal and vertical.
To remove pre-load from the T-bars, move the car forward and back several times couple of feet and bounce on the bumpers, front and back, wait a few minutes then take your readings.
I know I am missing something but others more experience will chime in. But hope you get the concept. +1 try to borrow some scales and corner balance her, she will drive so much better around corners
like on rails
Jim