The absolute best keyboard that I've ever used was the Matias Ergo Pro, a true split keyboard with an audio jack plug connecting the two halfs, so they can be very far apart. A true mechanical (Alps) keyboard, true split, with tenting and tilting and integrated palm rests. And a real Function key row! I had two of them. Why two? Because the first one didn't last a year, so they sent a replacement. That one didn't las…
Hearing that you got a whole replacement keyboard I guess I should reach out to Matias and see if they'll send me some free switches so I can fix it myself.
If replacing switches doesn't fix it, I would love an excuse to tear it down and replace the firmware something custom.