Yeah, mine pings, but it doesn't bother me. It's just the arrow keys that ping, the rest seems fine.
I have a o-ring under the backspace key and the left shift key. They bottomed very easily and felt very loose compared to the rest of the board.
Technically this is a "2nd" CODE. The first was purchased through Amazon, but they wound up sending me a MX Green instead of the Clear.
That was returned, but I did get to play with it a bit. Was a bit noisy for home use and kind of felt too light for my tastes. Or it might just me looking for faults because I really wanted the clears I ordered.
My office and household aren't quite ready for a Model M. I'd be silenced just a soon as I started typing. Real world is so different from the university labs.

No one cared about the noise back then.
At some point I'm hoping to find a SGI AT-101W granite board to go with a old O2 I bought years ago, but there's no rush as the thing is sitting in my sister's storage unit over in the USA. It isn't exactly a "lightweight" when it comes to shipping. Good old days of machines being made out of proper steel.
