CVA kentucky pistol barrel tenon question

[Mnt rifle]

Co worked gave me a partial CVA kentucky pistol kit he found in a clean out and I can't seem to figure out how the ramrod thimble connects to the barrel tenon, or if it doesn't, where and how should it be mounted

 

[64Springer]

Drill a small hole through the ramrod channel/web.

Chamfer the hole on the barrel channel side so the screw head fits flush or slightly below the wood.

Trim screw so it doesn't interfere with the ramrod itself.