Remember we will be adding finish to the leather and that will give you a chance to get all the wrinkles out when the leather is dampened from the leather finish.
No lubricant needed it should screw right into the wood no problem it’s the same bushing that came out of that bow originally and the threads match real good.
You can also tighten the bushing up by using the screw. Screw the screw into the bushing and then just tighten the screw and bushing both at the same time.
You will want to be super careful using the screw to tighten up the bushing as the screwdriver can slip out of the slot real easy.
I'm pretty certain if you can find a small Craftsman flat blade screwdriver it has a 1/4" shank. Just grind the flat blade off and you got yourself a quiver bushing installing tool.
I do use the adjustable wrench on the shank to make one 1/4-1/2 turn to seat the bushing. Be careful there because the last 1/4-1/2 turn tightening will wrinkle the leather.
Bear did tap the hole prior to installing the bushing. The reason being if you force the bushing into said hole hoping to cut threads it will normally split the riser. If you do not have the correct tap you can drill the hole almost the size of the bushing so it does not split the wood.
Add a little epoxy to the threads and it should be fine once the epoxy is cured. As for the counter sunk type hole in my B riser. The bushing serves to hold the leather down around the edges. So if you counter sink it the leather may come unglued around the edge of the bushing hole.