Common dash cluster issues question

What about the existing grounding pigtail from the steering column to the upper steering column mounting bolt? Wouldn't the mounting bolt be a suitable grounding location for the cluster as well?

Replacing the steering box was initially one of the worst jobs I've undertaken. Almost felt like pulling the engine was an easier task. But putting it back in was pretty basic, as was pulling the box the 2nd time, since it wasn't as nasty greasy or with frozen bolts. Can't remember if I had trouble pulling the upper seal. I know I mistook the thick washer outside the output seal as a seal itself and spent a while trying to drill through it before I realized my mistake. After putting it all back together, one of the internal paths/valves must have been plugged up, because I nearly took my hand off when I started the car, the wheel spun so violently to the left. Regardless of the metering block location, it just turned left and I had to pull the box again. Brought it to a professional that time. :/