Ive used tons and tons of bearings in my YoYo competition throws. The bearing totally determines exactly what feel and responsiveness the yoyo will play at. Higher lubed is more responsive less lube is less responsive.

We cleaned all of our bearings the same way, take of the steel guards on the sides of bearings usually involved removing a c clip. Then flush with mineral spirits (odorless) Works wonders every time. Just make sure you let them dry very well before you re-lube and replace.