Primitive Archer

Ya when I put reflex mostly in the last 10” of the limb it requires more thickness toward the tips to hold the reflex. It also makes the need for either thicker limbs at fades to about ten inches out or parallel out 8-10”. The bow probably does not stack at all. I like it.

 I think the main problem you were having was the low moisture content, like Cord mentioned. Yew really doesn't like low moisture content, becomes very susceptible to tension breaks.  I won't try stressing the limbs for at least a week after exposing the limbs to heat bending or corrections. Unless you live in a very arid climate I doubt you will have any troubles with unbacked yew, if its a good stave, and you follow the grain, compensate for any knots.

In future, non sinewed bows if they are going to be used for hunting, I would recommend that you back them with rawhide. It gives you a little more protection in tension, but more importantly it will help stop the sapwood from getting dinged, in the wild.

Here's a shot before I retinkered with it. You'll see it's already slightly whip tillered here. At this stage it had already been shot in over 2000x and had only 1" of follow, which I would call great.

Nice bow did you Mean to whip the ends. That’s what I see in the full. Draw pic.

I use Imgur, a photo storage site. It's free and it gives you options for sizing photos for different applications. I've used it for quite a few years now and have never had a problem with it.
 Before Imgur I used Photobucket which also claimed to be a free photo hosting sight. After a few years they decided to charge without letting me remove my photos. I lost over 100 pages of photos to Photobucket, many of which were bow building related pics, some were build alongs.