I've got a c500-y50 the serial number I believe is a y 355 510 2570. I've been having problems with the it pulling, its been progressively getting worse. Checked the transmission fluid and it was pink, so I've changed it a dozen times and still looks the same. I bypassed the cooler on the radiatior thinking maybe water was getting in through there, still no avail. I'm not sure where to start on getting her fixed or even if its worth spending much money on.