I drilled two 3/16 holes 180 degrees apart in the aft CR, centered between the OD and ID. The first threaded insert went in fine. The second hole gave me a hard time but after breaking four of them, I finally got it in. The inserts are made of brass. They have these tabs/notch so that you can get a screw driver to screw the inserts into the hole. Where as the brass is soft, a lot of times one of the tabs will break off. Maybe I should get a tap to make threads into the CR?
Does anyone know where I can get steel inserts that take 6-32 screws?