Dave, I have a K80 and I need alot of cast (right handed)I talked with kreighoff, they told me they could set the cast up to 1/2 inch by enletting the stock (not sure how they do it) krieghoff wanted $125.00 I had phillip do it and he charged me $50.00 that was six years ago. He got it to move about 3/8 of an inch, I also had a soft comb made and had the hardware offset about 1/16 of an inch. It has really helped me as I no longer lean my head over to aline the beads. good shooting