I have a 125VDC ground in the MK5 L64D_N comes in and out giving me the alarm. I have removed the 125vdc power to the DTBA, DTBB in QD1 QD2 and CD cores. I have a 90-35 split which I'm reading from DiagC. Removing the 125vdc does not change the split, but when I power down either R, S, or T cores my voltage evens out to where it should be on the positive 62.5 and negative 62.5. Once the core is powered up the split goes back to 90-35. Have you seen this before?