There is a concurrent thread about glues running right now --- I have repaired several similar stocks myself, at home with a good glue and latex tubing. Get glue on the piece, get it in place and get a good wrap around the wrist and head with the latex tubing. I have had several successes and no failures or need to send any out to fix my work or other wise be redone. The staple reinforcement is a good suggestion and addition though I rarely add it myself. I use Loctite 4011, which is incredible but requires very fast work.