I don't think this is screwed up.  Just start removing wood mid limb and out, till the tiller starts to become more even.  In my limited experience (with R/Ds) the mid limb removal can start to show up later in the draw, so its easy to over do it.  Go slow, check the tiller a lot, and pull a bit farther just when things start to even out between inner and mid limbs.
Gabe