I once had an issue with a Horse I owned.
I received all the usual help, and in the end got the issue resolved at a cost.
The individual who resolved the concerning issue, made it clear.
"Some Lessons in Life are coming with a hefty price to pay"
Ouch! I paid up and absorbed everything I could from the experience to be preventative for the future.
As for @mijostyn, "Some Lessons in Life are coming with a hefty price to pay"
What is not known is if the lesson is about buying into Cart's at a US price that can be found as an Import for two thirds less, or is the lesson one that is based on learning that snobbery can hurt at times.
I do not need to Spend $11K on a MSL Signature, hence it is one that is on a shortlist to experience in use. I expect to be able to have one at the door, for approx' £4K+. Possibly even a VAS overhauled one with 75 hours on it for £2K.
Maybe the lesson to be learned is that when looking at the assembly of a Cart' under a microscope, as the OP claims to do, the same scrutiny would be best practice for the warranty being offered as well.