Y frame offset

After reading the procedure for mounting the Y frame it states at step 10 to Place the Y-Frame offset fixture A (185mm) onto the rear of the left Y-Frame extrusion. So i printed off the ‘Y frame offset fixture A’ and it measures only 109.5mm so i checked the cad model and yes its only 109.5mm :open_mouth:

What is the correct dimension??? 185mm seem far to big and 109.5mm to small :cry: