I'm foreseeing re barreling my savage 111 in the next 6 months. Can anyone tell me the thread pitch, thread depth, and thread length for the adjustable muzzle brake? Also I know to insert pins into the holes when I want to remove the brake but is there a way to unscrew it without scaring the finish? Customer service at savage was awful yesterday. My Web search has came up empty as well. There are a lot of knowledgeable folks here, any info is much appreciated.