So I was installing a freshly bored cylinder on my Yamaha Rt 100... I know not a moped. So the new piston came with what I will call a wrinkle ring that goes under one of the piston rings. After looking it over for a bit I came to the conclusion that it should go on the lower ring... additionally one of the rings came with a wider ring gap so I put that ring on the top. Was my conclusion right? Anyone have any guidance on that odd ring?