Hi, I´m doing some maintenance and can´t remember how the corrugated oil scraper (that has the two thin rings in the same groove in the piston) goes in. I know it has to go in before the accompanying rings because of the notches and that the ends should not over lap. However, I don´t remember whether it matters which way the ends point, up or down? So, _/gap\_ or \gap/ ? I thought the manual had a picture of this, but the pic must´ve been in the instructions for the big bore kit that my dad got for his 450 and is now lost.