Loctite has not worked.
Vibra tite has not worked.
The supplied set screws have not worked.
Barrel threads are already kinda screwed up. Not enough to prevent mounting or removing the comp or a thread protector however.

I would ideally like to shim and time ICW Rocksett, or drill and pin with Loctite.

Removing the barrel is not a concern as I would only do that to replace the barrel. Bore snake and solvent soak the comp every few thousand rounds.

Sent from my SM-G920T using Tapatalk