I quit fighting extreme prop twist. I wack off the straightest part of the stave ,and build the bow.It is the reason I have built so many short bows over the years.Good info on how to straighten prop twist above. I take the bow down to floor tiller, and put on a form when working with moderate twist. With heat ,and clamps get the stave to conform to the form.Lining the tips with the riser ,and taking the twist out as you go. You may have to repeat the process to get it to were you are satisfied with the end result by making minor adjustments here, and their.