Hi guys, I'm busy install new rings and pistons. I'm not to sure about the order the rings go onto the piston. The oil ring I'm OK with, but the top 2 rings I am unsure about. One has sharp edges and the other is has smother edges. If I remember correctly the ring with the sharp edge is the middle ring? The rings also don't have any markings on them, thus I surmise they don't have a specific top and or bottom. Your advise at this time will be really appreciated.