keyboard lube

[OhYou_]

I have like over 10 k520 logi keyboards that are perfectly fine except the keys stick down or up or generally suck ass to type on.
It is not liquid spillage or anything, what i think happens is Logi uses some kind of lube for the key caps, and over time dust works its way in and combines with the lube to become trash.
I will like take the keyboard apart and wash it out very well but then the keys do not press right, if you try to press down 3-4 keys at once in the corners, they bind and are near impossible to press, but new or used ones in a cleaner environment it is fine to do so.

I tried graphite dry lubricant and it did not work.
What should I use?

[Needfuldoer]

Try sewing machine oil, which is pretty much just unscented baby oil.

 

I don't lube key switches with it, but I've used it on floppy drive components and other fiddly little things that need to slide.