We have a part (.1875" thick 5086 alum) with two different bend radius. two bends at 1.5" rad and two bends at .375" rad. I have a bend deduction for the .375" rad at .421". I do not have a bend deduction for the 1.5" rad, I'm using k-factor .5 and my flat pattern is too small. I used a k-factor of .97 on another part with a larger radius (6"+-) and it came out correct but the .97 k-factor is not working for this part. please help.