Probably not what you are looking for but I am doing an osage propeller but am doing a takedown. So I have two halves that I can rotate inside the handle, slightly, so that limb tips are nearer to being on the same plane (no pun). The result is that now the near handle wood is out-of-plane but the limbs pull evenly.
It is evident that the tips like this better during the tillering as the limbs want to rotate to keep the tips on the same plane.
I'm keeping the bow long for now so reduce stress. Time will tell