VPI Scout Hum

Hello, I have a new VPI Scout and I am getting a low hum. I worked through the whole chain and I believe I have isolated it to the TT. Basically if I disconnect the table from the phono input the system is quiet...no hum. When I plug the TT in the hum is there. I tried unplugging the tone arm plug from the RCA junction box and it just adds buzz to the hum, when I plug it back in the buzz goes away and the hum remains. If I unplug the motor the hum remains. Even if I detach and unplug the motor and put it on the other side of the house in a closet wrapped in lead the hum remains. I am guessing it is a grounding issue but the table is factory grounded under the chassis so to speak. I tried running a wire from the chassis to another ground and no change. The only thing I can think of is the cartridge. Is a hum possible from just the cartridge?? if so what could it be? non of the wires are crimped or pinched or broken everything looks perfect. By the way it is a Dynavector 10X5.

Thanks!