I did try to add a little flex to the bow, but I ended up adding a deflex to the midsection instead of a reflex, and by doing so I lost power in the bow a little, so I took it out (bent it back). It's probably a combination of everything, me bending and rebending the staff, maybe I took too much off at that point, maybe there was a crack.
My biggest issue is I can't tell what a proper tiller is, such as what is too much? I thought and agreed with Pat that the upper 1/3 of my limbs look stiff as they were straight while the lower 1/3 of the arm was bending, but I have seen some pictures of guys bows that they build with those tips just as stiff. I really wish during the workshop we fully completed it! That way I knew what a proper tiller was and I knew what to look for.
I'm certain there's no degree of measure to define a proper tiller, you guys just have a feel for it, and every stave is different.