XR grounding or THC issues

I began to get rough cuts on my XR, so i cleaned it out/off and went through the bearings and rails and cleaned/lubed everything. It now travels smoother than ever but i now have problems with it shutting off soon after it starts a cut. I believe i have narrowed it down to a ground issue, possibly. While at idle, it is showing 250+ volts on the THC live. If i remove the plasma cutter ground, it shows 0. I have gone over my connections and moved all electronics away from each other as much as i can. If i run straight line cuts with no THC controls, i have no issues.