c230_2k2

I brought my car in for transmission jerk...I was reading quite a few thread andit seems like once your tranny fluid gets mixed with coolant, about 80% cant be fixed not unless tranny being replaced. I read torque converter being replaced and tcu being flashed but jerk always comes back....so I demand for a new tranny...car is still under warranty....one thing here in vegas since fletcher is the only dealer...i cant gget a secong opinion and I have no way of finding out if parts are being replaced just like what the dealer claims. Any help will be greatly appreciated...