Your engine is ready. I cleaned it up, the piston and sleeve are fine. Just 2 minor scratches on the piston, but no big deal. The compression is still good and the P/S are still tight at the TDC. For the head shims, I suggest you put 0.5mm on and use #7 plug if you are going to use 30% fuel. You can choose different plug to alter the ignition timing. I'll bring your engine to the track on Thursday. I believe your engine will run faster. Let's see...