Just opened my board with Gateron yellows pre lubed. The blue ones aren't lubed. I found similar marks all over the keyboard. Can these marks be dangerous and how do I deal with them?
They seem to be under the transparent plastic sheet on which the switches are mounted. I think it has foam underneath.
I'm gonna pass on some knowledge that my mechanic gave me years ago when I started getting into self-repair and kept asking him if things needed to be repaired or replaced:
"Does it say in your user manual that you need to do anything with it or is it currently causing issues? No? Then leave it alone. If you start trying to find issues with things that are working well, you're just gonna end up paying for repairs on a thing that'll never work the same again."