I agree with mc. This is not usually a difficult repair. To add just a couple hints; first make sure the cracks are not oily. No glue or epoxy will adhere to oily wood. Also, if you carefully cover the areas surrounding the cracks with good painters masking tape, you can minimize the mess from epoxy squeeze out after the surgical rubber tubing binds the cracks closed. Lastly, when mc said to use good epoxy, he was talking about something like Brownells Acraglas or West system clear epoxy. I would avoid the clear five minute type epoxy. It's just not near as strong. Type II yellow wood glue also makes a very good repair on clean wood. We all see many old stocks repaired with gray and white epoxies that will certainly hold, but look like crap. Of course, we also see stocks repaired with stove bolts, wood screws, fish plates, and baling wire. The fact that you came here looking for advice suggests that you aren't that kinda guy. With a clean joint and good clamping, a clear epoxy or type II glue repair can be almost undetectable. Good luck. I'm sure others can suggest a good stock guy in your area should you decide not to do it yourself.