Pete, questions are good things.
I used a 4 inch center post in the center of the handle. The mid-limb posts were 2 3/4 high. The top mid-limb post was centered at 13 inches from the center of the handle. The bottom mid-limb post was centered at 12 5/8th from the center of the handle. I used 6 inch limb tip posts.
The reason the limb tips look the way they do is because of the kerf I cut 8 inches down the limbs from the limb tips. And the first bow above I used Bamboo lams, the second one in progress I used Osage lams. But both should have the same profile. The kerf on both these bows is cut 1/16th thick, if I were to cut it thicker, I would see much more reflex/recurve at the tips. Because a thicker kerf, equals weaker limb tips at glue up, which equals more reflex/recurve.. Meaning the thicker I cut the kerf, the more freely the limb tips will flex when glued up. Ya dig?