They definitely did not use a drive on lift...That is the reason I did not have them install subframe connectors (thank god). But I figured springs would not be able to be done on a drive on anyway because you have to let the wheels hang....I didn't know anything about the a-arm situation unfortunately....We are new to the area we live in now and it was about the only "performance" shop in within 20 miles....figured they knew what they were doing based on the other vehicles they were working on, but live and learn. LOL...It might not even be their fault, but what is their fault is just saying "here is your car" rather than fixing the issue even if it cost me more. I don't think I could ever allow a car to leave my shop after installing springs and the front being higher than it was before. LOLSorry you're having trouble with the shop. It seems like that is becoming more and more the norm. That aside did you ask them if they took the arms off? When you were at the shop did you notice if they had four point lifts or if your car was going to be on a drive on lift? You would hope that they would know better than to tighten everything up with the wheels hanging, but never underestimate the power of stupid. The guy that worked on your car might be a noob and screwed up. I've certainly had that happen to me.
Keep digging around. I find it hard to believe that what ever the issue is with the car is very complicated. You've had several things suggested here to look into. Just start eliminating possibilities and you'll find the issue. You might want to take it to a different shop to have the struts installed. Just saying.
I ordered new struts and hope to have them Friday and then I will start figuring this puzzle out the hard way.