As for the shop, they did do a fine job on my 84 300SD, which I know is simpler but does that lend any logic to their abilities?

I haven't checked the front hub bearings but if they were loose wouldn't it show when they reefed on it while it's on the alignment rack? Never hurts to check, though.

Where can I get the official alignment specs to compare with what they're using? I have the sheet that lists what everything is being set to if anyone is interested.