Hey Sounds familiar, Needed an alignment after putting new tires on the Z. while I haven't lowered the car, I did change out the front bumper cover to a NISMO. Went to 3 shops The first two Boneheads Attempted to put on the machine until I stopped them. The 3rd shop had some intelligence, Just look at the car and sent me to his other shop that had the alignment machine lowered into a pit. Just rolled the car on to problem.
The best part is after the alignment the car felt much better.
