I am not sure( could be wrong) that putting the bow on a draw board will tell you anything. For example, when you measured the tiller at full draw, what did that tell you? When the bow shoots the arrow, the path back to rest is not necessarily the same as the draw in reverse. On the power stroke, the string is held back, to some extent, by the mass of the arrow. That resistance on the string is not central so will change the way the limbs react as they unbend back to the start. Also, the way the string is held during the draw, with the fingers, will bend each limb slightly differently from the way they are drawn by the draw board.
. If the goal is to get both limbs coming to rest "nicely" so they don't end up flapping back and forth for some time afterwards, you could try adjusting the tiller bolts so they start from a different position, in the hopes that one starting set up will give the end result you are looking for.
If you go that route, I would make sure you count the turns on each limb bolt as you go so they can be put back if you need to. As you change the limb bolts, you will need to have some way of deciding if things are getting better or worse. It is not easy to see the difference and often the sound is much the same.
Changing the brace height can often change the way the limbs return to rest; so that is another option.