I only ask because I had some problems with TBIII introducing too much moisture into some multi-lam bows. In terms of strength it's awesome, I just was having trouble with stuff like you're talking abut using it.
It adds a bunch of moisture, and when the bow dries after glue up all sorts of weird stuff was happening.
As far as tilering, I think you're supposed to remove wood from the side away from the side the tip is bending towards. But then again I always check the drawing first ...