[Ralph Moore]

Decided that since I'm slowed down a little due to knee surgery and decided that I would finish rebuilding a couple carbs. I have two Chandler- Groves in pretty good shape, but one has a stripped bowl screw. I want to helicoil it , what size do I need? All my good tools are at work, including tap and die sets.
Also anyone remember the # for the power valve block off that Napa sells? I have CRS and can't even remember the brand they sell, maybe Holley?
Thanks,
Ralph