Tell me about it, I am kinda not underwtanding the imbalance either. Had two sets of eyes on the meter, just so I could take that out of the equation. How could you get a two pole breaker to go across A-C? Maybe I am not visualizing this right, but if i had 2 breakers one on top of the other, lets say A-B, the next two pole would be B-C,and so on. Or am I just not seeing what you are saying?
Now that you say it, I never took any readings other than at the terminals of the subpanel, and in the CT cabinet. Never took any readings by putting the loop close to the conductor, how does that change the readings? change the amount of flux lines it sees?