The toggle seal inspections are only to monitor the progress of rubbing.
The root cause is the wear in the VSV bearings, something which I was told that GE have not yet got a fix, and did not expect to be "on top" of the problem for at least two years.
When the wear reaches the current limit , the engine gets pulled, sent back for overhaul and gets put back to the original condition ready for the toggle seals to start wearing again !