Cart's are extremely fragile in their nature, a Cart' sent in for a Treatment from a OEM or Third Party Service, is usual for it to undergo a shipping experience, where the Cart' is entered into a process that really does not care for the fragility of the Part in the Package.
Being an owner of a Cart' sent for Inspection or Inspection/Treatment leaves one without the inherent knowledge of a Cart's condition prior to being entered into the .precarious world of return shipping.
As an individual who has Cart's worked on by Third Party Services. I would class myself, as not being qualified to make a decision about a cause of a condition for Cart' being received with a fault, if the notion was a shipping or workmanship, was under suspicion for the cause of a Cantilever not being in a ideal alignment.
Maybe a Cart' Service could take a few images of the Cart' prior to being packaged for shipping?