Yeah, I know Tom would do different heat treating treatments to cylinders and rings also. It would be cool to learn those techniques but I don't know if Tom left any notes or instructions. I think he heat treated cylinders first if they were not round, as this shrunk the cylinder a fraction, and then honed them round afterwards. And not all Super Tigre engines had chromed liners, even though it says "chromed" on all the crank cases. They ended that practice early on as time consuming and expensive. But to keep some "truth in advertising" I think they still chromed something on the cranks shaft, maybe the main bearing surface, so that they could keep the chrome designation on the engine. For the engine in question that you are working on, I think the answer is to replace cylinder liner, I'm afraid.
Type at you later,
Dan McEntee