, Not fixed twice for repairs errors

I've found when using the saw that she chatters with greater load. My guess was that the clutch is the cause. After my call to the Service Center, I received a bill returns to returning. I was told that the gear must be replaced. As the saw back was in the repair report that a cover has been replaced. The error was still there. I then called back and was asked to send in the saw again and pointed out that the gear must be replaced. However, I was back repair report that a cover has been replaced. I then had no more nerve and use the saw with the shortage. How long it works, I can not say.