Answer to "Replacement transistor (304) on pins U11 & C37"Yes thats actually a problem as this part is not a transistor it is a hall effect sensor. Mircrosoft went full retard on this as they have replaced the old analog triggers with magnets and the sensor. If the output of this is pulled towards ground with the hall sensor the controller realizes that. To have higher efficency it is powered by a PWM signal so that might explain why your controller just spams the trigger now. If you need more help or something i said is wrong just let me know.