Eaton promised to work with ARRL on future issues, so going to the League is probably the right move at this point, unless you have a local Eaton engineering rep in the area. you could call an electrical supply house to find that out.
I have a little concern about ferrites in the entrance panel for, as you know, they are conductive. I doubt your local inspector will issue a waiver to use standard breakers while this is sorted out. the interim solution I'd think about is ferrites outside the panel at the wire clamps, as well as ginning up a Q&D field-strength meter and running along the grounds and such to see if they are REALLY ground. working on that might get you to a solution faster. just get a sensitive meter, a diode, and a .001 or .005, a little open coil, and start sweeping.