I agree that the bow is bending too much in the center. That's exactly why I've come to prefer a powerlam in the handle area...it shifts some of the bend away from the center, into the midlimbs. Of course you can also tiller it so it doesn't bend that much in the handle, but the powerlam seems like an easy method that results in less time spent on tillering (but more on making the actual powerlam). I personally think you are already overdrawing the bow in the last pic. You should have seen the excessive bend in the center earlier on in the process. Did the wood take a lot of set so far?
You can easily correct the tiller by scraping both midlimbs, out to the tips. The left limb is also stiffer than the right, so take a bit more wood off the left side. If correcting the tiller means you'll come in underweight, then so be it. Good tiller is more important than reaching a high draw weight.
By the way, you can make those pictures appear right into your post, without the need for people to click those links. Use the [IMG ]-tags for that. Place [IMG ] (minus the space!) in front, and [/ IMG] (minus the space!) behind the direct link. Or: when making a reply/post, use the first icon on the second row of icons:
this one. More info here...
