Thank you. I know that timing is important. I can use a stator from my 79 RM125 to copy the timing mark to have a basic set up and make sure that the coils on the new one are in the same position. I have oem rotor, CDI and ignition coil so it should work fine. It is a very simple stator so only faulty parts could be the coils. Manufacturer offers 1 year warranty.