"Ran when pulled"

So I went at it last night for about an hour or so with some carb cleaner, WD-40 and some very LIGHT 400 grit. Managed to remove about 80% of it and there doesn't appear to be any cylinder damage. i still may pull the pistons and do the bottom end, but going to fill the cylinder with oil tonight and let it soak a bit and try to remove the rest. To be perfectly honest, I have never changed out rings before and am nervous of doing that myself...but the whole purpose of this car was to learn new stuff so I need to quit being a Nancy about it. Do it right.
Thanks for all the replies and input guys! Will keep you posted