In this video I show our "procedure" for making the vent hole in the side of the IT slugs, then I make a recommendation for how to glue in finger grips to ensure they'll stay in, leave room to insert shims, and be flush with the surface of the ball all the way around without doctoring or cutting.  I also make recommendations on how to plug balls to minimize the risk of cracking.  Thanks for watching, appreciate feedback and questions as always!

https://www.youtube.com/watch?v=CFkEtLdkufk

A short "bonus" video, just a lane level view of my ball roll.  It's just a short little "teaser preview" of a clip that will be on my opening analysis for my documentary. 

https://www.youtube.com/watch?v=1QqWoUk5PgQ