Well, apparently the keyboard replacement did not resolve the problem. My 2016 15" keyboard is once again repeating the "b" and "n" keys. And the "c" key does not always register. This 8 days after I picked it up from the Apple store, where the keyboard was replaced at the depot in Texas. Should I simply ask to pay a couple of hundred dollars to move to a 2017? Or ask them to swap mine for a 2015? (Configuration is 2.6/1 TB/460.) I'm becoming . . . perturbed.