Tbh unless some one has some fucked pistons you can get a ring off then you will end up buying the whole set did the same thing bout 9years ago with a JE piston on a mini engine and same story back then. in face still got 3.5pistons worth of bloody je mini rings in my shed lol. hope some one can help ya out dude! Oh and on a pluss note i had a few hicups back then with that mini engine did my head in tbh but also turned out to be an insanely powerful torquey and strong engine so chin up dude ;) you will get there