My new GT has been perfect.
When I worked in an independent Apple shop, we had situations like this that were handled with the right amount of voltage to a particular part. That way Apple couldn't say they couldn't find the problem with the computer (if doing a depot repair) or a part.
email@example.com and I'll get you AC's personal email address.
Here in Arizona we have a very effective Lemon Law, a number of AZ Beemers have gotten their money back due to BMW NA shenanigans/mullarkey!