Bob has done several piston/sleeve sets for me, but that was a few years ago and at the time he was talking about 'retiring' which, perhaps, he has done. Somebody in the engine forum might know a source or better, check the Control Line forums, especially the C/L speed because that's were heavy engine modification still happens. Good Luck! The only other person I know of is Henry Nelson of Nelson competition engines and he might be willing to re-chrome, too.