Another thing. I really dont see the point in bending a ceramic coated anything.
The coating is on the piston head, keeps it from absorbing heat and makes it last longer. OF course ceramics will flake off! The fact that they are brittle is irrelevant.

Also, I dont believe the sleeve is ceramic coated. That would be counterproductive. Ceramics arent very smooth at all and chromium would be the best choice for this applicatioin.
Nice n slick!

-ram