Hi,Nick! Glad you figured it out! That's the trouble with stuff nowadays.A lot of times you get incomplete info. or just plain reversed.I'd give that #82 jet a try.You did mean to say that you have your new 70cc kit in there, right? The piston was just backwards?So it will need a lot of fuel to break in with.It's safer that way,rather than take a chance on running it lean.But #82 probably is too big for it.Just try it and see.What spark plug will it take now for optimum performance,I wonder.