To prevent the magnet from breaking, suck the excess RTV out through a tube as the center will be almost impossible to remove from the magnet. Remove the Plexiglas resistor base mold and seal around the inner and outer circles of the RTV with a careful application of sealant. After sealing silicone has cured, assemble resistor column as per print. Remove the 8-32 screws from both ends of buss. Use razor blades and mallet.
Hammer razor blades between core and base of frame.
Lift core out.