In this case,hmmm, you don't want to lemon law, because you love your car,sighhhh,...
Be calm with the service manager, and explain to him that you understand that he is haveing a problem, but it is your right as a consumer to have a proerly functioning vehicle, and it doesn't matter the cost of your time or chryslers parts. With it being under warranty, you can not take it to a MB and still have it under warranty. I still recomend talking to the area manager.
If the controller is pulsing....Let ma look at the circuit. Ill post more later.