Aligned into oblivion

I took an older Imperial down to a shop to have it aligned. Figured they would know. I watched and got very concerned. I got the owners attention and he let me onto the shop floor (Midas shop). They had no clue. His lead mechanic walked away swearing at the car. I could not believe it. The owner told me they could not do anything and that there was something seriously wrong with the car. I took it back home, took a good look at it and realised what was happening. They were taking all weight off of the wheels and trying to adjust the caster/camber. It won't work because the suspension is loaded and when you loosen the nuts the front end adjustment surfaces just gets cocked out of shape and won't move. I found you have to remove some weight but not all the weight from the wheels so that the adjustment surfaces stay relatively in the same plane and will slide when you try to adjust them. A little finicky but not rocket science.