Wow. That was fast. I’m literally on my fourth typed word with my Model 01 plugged into the original USB port and I replicated the issue.
Thanks @jesse for the suggestion.
SOLUTION:
If you are experiencing multiple keypresses, seemingly at random and after you’ve given your keyboard a good cleaning, you may want to try plugging the Model 01 into a different USB port. My issue seems to have stemmed from using a USB port that was on a hub that was shared with too many other resources. When those resources got chatty on the USB hub, the Model 01 would get interrupted, resulting in missed keystrokes, pauses while the keystrokes caught up, or repetition of the same key many times. Switching to another USB port fixed my issue. If you are thinking this may not apply to you because you are using a USB dock and the only thing plugged into it is your Model 01, I’d encourage you to still try this approach. This is my own setup, but internally to the dock, that USB port may be on a hub with your network or a video controller. I hope this helps someone else!