I recently installed KBDFans Silence-X silencing rings in both a Novatouch and a Realforce 88U. On both boards a couple of the keys have a loud noise on both the downstroke and upstroke after installing the rings. EDIT: They actually make the noise when just tapping the keycap a bit, I don’t even have to actuate the key. I’ve added a video at the bottom highlighting just this.
I have not opened the board yet to check the alignment of the rings yet, but I suspect they are moving around a bit, or I didn’t get all of them properly installed.
Here’s a short video highlighting the sound on both the downstroke and upstroke on the F-key, compared to the properly silenced D-key. The noise is exaggerated by my microphone, it doesn’t sound this bad in real life.
Here’s a video showing the sound when just tapping the key, without actuating it (sorry for the rotated video!).
Overall I’m really pleased with the result, and hopefully I will manage to remove this noise from the 2-3 keys that have it.