Cp3-cp4 ?

[miles50]

I have looked through the forum for the answer to my query. On page 173 the total length of the CP3-4 plate is 227mm you take off the center measurement for the shock bracket of 48mm you get 179mm. On page 49 fig 4.26 the dimension from the edge of the plate is 176.5mm. If I set up the plates on the frame and measure across the centers of the shock mounts the 176.5mm measurement seems correct where as the 179mm put me to short. Any answers. Thanks