I got a Boyds lightweight thumbhole stock for Christmas from my kids.
Didn't like how the action screw went through it, so decided to install a pillar.
View of the 1/4" this wood to support the action screw (why I didn't like it):

Bored out the hole to 9/16" and Devcon epoxy glued the 1/2" aluminum pillar into place. Then Devcon bedded the action:

Pic of the barrel setting in the stock:
