ok everone on here seems to no there stuff...i thought i might need new rings but some people say no....my cr 125 is smoking really bad.... i repacked muffler drained gas mixed new...and everthing.....starts u like 1-3 kicks ideas good...just smokes and oil sprys out the exhaust and no power when i ride it...can anyone help i dont wanna have tear bike down if that aint the problem...thanks for your help