I see what ya mean.
I put the stock piston and rings into the steel lined cylinder and really it was a tight fit,
I'd say a bit tighter than the original chromed cylinder fit.
I thought of actually sort of smoothing over the sharp edges and boiling them in castor oil slowly overnight.
Meh, who knows what i'll do
But i would like to find and try the chrome faced rings sometime.
Ride Safe FOTI!
HP