Installing ceramics on Revo S

I have a Revo S that suffered some damage to the bearings a while ago. As a consequence of this, the bearing screech and it's driving me nuts. They function well, but somehow I feel that it's hindering the casting distance of the reel.

Therefore, I've thought about replacing the bearings with ceramics. I want to do this myself to force myself to understand the mechanics of a reel a little better. Sooo, my questions are:

1) What type of bearings would fit this reel?

2) Is there any tutorial (with pictures hopefully) online to guide me in the process of replacing the bearings?

Thank you!!