1. The wood is now 115 years old.
2. It is much easier to prevent cracks than fix them.
3. What Dan said - the stock is off the action now.
4. I know you understand that it is recoil, and not pressure, that cracks stocks.
5. An alternative may be de-oiling and ultra-thin cyanoacrylate impregnation of the head of the stock. Would appreciate David's and Dan's opinion in that regard.