Hey everyone, currently digging into my nsr right now. Going to be rebuilding my engine but I am going to need some insight. My current engine is an mc18 dry clutch motor, I've got the top end apart and there is some scoring on the cylinders. I have a couple other wet clutch engines that could possibly have good cylinders. I also broke off one of the power valve shafts (didn't know they were backwards thread) if there is someone local that could maybe give me some insight it would be much appreciated. Thanks in advance!