I recently had a new transmission put in my car. Since the transmission was put in ive had problems with the car dropping from drive to neutral back when i am at stop signs/red lights, mostly happens on a cold start. i've had people tell me it was the cable that runs to the transmission was streched out, and that it was a bad torque converter. took it back to the dealership and they drove it. dealership didint find any problems and told me they could not fix it until they had it happen with them in the car. any ideas what it could be?

 

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