Awesome! Grandma said the same thing when I said I'll probably have to change them! just out of curiosity. What would happen if the valve dropped? Could it be retrieved with a magnet? I was able to pull a pushrod up with a retracting magnet after I missed the hole and dropped it into the depts of the engine.. Never messed with the valve train but a pretty decent mechanic ..so this will definitely be a good learning experience,