I just did a 3-part process to my 100M sliders.
First I use Kontakt 60 to clean off the crap, then Kontakt WL to wash away any leftover crap, and then Kontakt 61 for lubing & protecting. They feel pretty damned good, and not at all too loose.
I cleaned some slide switches too, and the result was that ALL lubing washed away from the switches with 60 & WL. I had to apply a lot of 61 to make the switches work smoothly again, but it worked well,