Front suspension bracket layout, confused

[Jimmyd]

Ok I wasn't 100% happy with the alignment of my front suspension and have decided to cut the brackets off. I had the David Murray jigs laser cut and I'm ready to go again but I'm having a mental block wilst looking at the positioning diagram on page 47. See attached.

Should the measurement i've marked as A,B&C not equal A,D&C?

A to B = 83.5 + B to C @ 108 = 191.50

A to D = 28 + D to C @ 155 = 183.00

Is A to B correct at 83.5? I'm sure I must have went wrong here 1st time around.

J