Performance has not degraded yet, but compression is definitely less than it was before and fuel consumption has gone up a bit.
The liner does have a cross cut effect on it, I noticed that before running the engine for the first time. I will try to make a good photo of my liner so you can see the 'damage' on it. It's something I haven't seen before on any of my engines and it looks like the liner has some smooth and some 'rough' areas...