I have an a200 with a 7g dct 724.0 transmission and am having problems with jerking while accelerating, rougher shifts at low speed and in rare cases, just dropping into neutral when coming to a stop. I tried things like changing oil several times trying to flush it and a gearbox reset, but now i have taken the valve body out gor cleaning and testing. When i took the two halves apart, a small cylinder with a steel ball attached to it and a spring. I assume its a check valve, but i cant seem to find any diagrams for the inner workings of this valve body. Does anyone know the locations for the check ***** or have a diagram for it?