For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
As dukefawks mentioned, an Apple keyboard program is available for these machines.
If you didn't work on it yet, run to Apple.
He also said to forget about changing keyboard only:
"Keyboards are crap quality and you need to drill the rivets. It is NOT like the A1466 or A1502
But for the love of god just get a complete topcase"