What I decided to do was to change the line of the throughbolt to lift the comb while still appearinmg to be a standard stock as you can see from this pic of the bolt hole line marked on the stock. The dotted line is the traditional bolt hole line and the solid line will lift the comb line although I also added a little to the comb height as well but not enough to be really visible on the finished stock .
This is how I drill the bolt hole. I use the drill cradle to support the larger bit bit as I make the initial centering mark that also fits over the thread exceptance projection in the wrist socket. Then the long bit, which is just a length of mild steel that has had a "D" flat milled into the end that has been sharpened with a bias to cut as it turns. Tha larger bit is also mild steel and is for the counter bore to take the head of the stock bolt
