Ameyam soaking in alcohol alone, without heat will not remove old color deposits but you are right the photos do look awful and of course with macro photos will tend to look like a sand paper consitancy on top of the piston, has it actully been eaten away? Also the sleeve is very difficult to see around the ports but is sure looks like its in poor shape agine its difficult with the pictures but it almost looks like peeling on the bottom edge of the ports.

The piston top and the head looks as though something has solid has banged around in the swish band area.

John