There 10 other experts ahead of me.So let me add my two cents in.First off never use a tillering board that holds your bow string in one place for long periods of time.Remember wood has memory.And when it's held on a tillering board for long periods of time.While you took your picture or when you stand back and looking at it for a long time in your tillering board your teaching your bow memory.You want to teach your bow memory,while not butting stress on your limbs.
If your bows 49 pounds now what do you think it will be by the time you finsh tillering and sanding it.Make a tillering board with out the notchs.Attach a pully to the foor at the bottom of your tillerinng board put a rope through it attach to a scale[deer scale].I HAVE MINE SET UP USEING A SMALL BLOCK AN TACKLE SYSTEM USED TO RAISE DEER.works a lot better,easer to stand back hold the rope and look at your bow on the tiller board.Use a long string untill you can brace the bow.That way you can tiller it to your weight,never going past your intended weight.This dos'nt but exsess stress on your limbs.[NO LONG TERM HOLDING]And you can tiller it right back to your draw leanth.No guessing weight,you always come out with the bow weight and leanth you want.I was showed this method when I started over 18 years ago.And it's worked on a lot of bows.Way to many to remember.
DEAD IS DEAD NO MATTER HOW FAST YOUR ARROW GETS THERE.