@lardawg I always feel the need to chi in.
I have used Cart' rebuild Services, and gave the utmost praise for the Skills of the Technicians at their helm.
My own and others I know who are using this method, has as a result, created genuine advocates of the practice.
To hear the Cart' had a unknown of fault and the assessment offered following Andy's work is one more story to encourage others to make a Contact with a Third Party Service.