You might have to adjust the height of the die in the holder for crimp, and adjust the knob on top of the die for seating depth. I do not know how the reddings work, but I am thinking that the crimp is built into the die body, and the whole die would have to be moved up and down to adjust crimp. The knob on the top of the die will only affect length. Leave a round long(bullet high) then adjust the die body until you get the crimp you want. After you have the crimp set, lock the die down and then adjust for desired length.
Hope this helps
Randy