Never trusted Aamco (a name designed to crop up first in the phone book) or their ilk (i.e. franchisees or company-owned garages run by employees rather than owners
For do-it-yourselfers, I've had excellent experiences with "Mr. Whizard" out of ND ( http://www.mrwhizard.com/index.cfm
). Send them a bad unit and they rebuild it. Prices include shipping and they provide the purpose-built shipping container.
They repaired the cluster in my 88 Eldo after it faded and could be read. After a few weeks, the problem recurred. Called them, they sent another prepaid box, fixed it in less than a week (including shipping) all gratis. I understand that things sometimes go wrong, and appreciate businesses that back their work up.