At last, the fork legs can be slipped upwards into the bottom yoke. The height can be approximated for now, as I’ll line them up to the top yoke once I’ve fitted that. I always use a smear of anti corrosion grease inside the yokes for this job (Universal Aviation, the ACF-50 people, do an excellent one). This helps assembly and will prevent the bare metal yoke inner surfaces corroding to the stanchions, making subsequent dismantling much easier. And a final tip: if the fork legs are tight in the yoke, remove the pinch bolt and gently open up the slot with a large screwdriver while twisting the fork leg upwards through the yoke