Hey sly, you misunderstood what I was talking about there. I meant that other manufacturers do not explain everything fully. That's all
From what I read you simply need to counter the trailing mm's with washers behind the hub carrier. It works out simply since its the same number of washers as trailing mm.
The example shows 3mm trailing so you need 3 x 1mm washers behind the hub to space it forward and the remainder (1 x 1mm) in front.
Those washers/shims are only there to counter the axle position setting and keep the axle in the same place when using various settings.