I picked up a Bronco for my boy(epay)....has a mean twist to the upper limb that I just cant get out. I have held it under hot water, goes back every time. I have put enough torque on this limb you would think it would snap, still goes back. Am I just not getting it hot enough or is it a lost cause? I can string it and gently draw it without the limb twisting on around, I'll get a pic in a minute.