I've had my M1 Air since shortly after release. I'm more of an advanced "hunt and peck" keyboard user than a " proper " touch typist. Recently, when reading back what I've typed, I've been noticing I'm repeating letters in words. Not all the time, but often enough. I did suspect that it might be the onset of a subtle neurological condition ( I'm in my 70's ), but further thought had me doubting that. It's almost always the letter "a", and never a consonant. I mentioned this to my wife and she said that she'd noticed a similar thing. Of course as we're a similar age it may well be us and not the keyboards. I was curious as to wether any other forum members had noticed a similar experience.