Balancing front steer tires

Yes. It’s because they are not being center coned correctly and were off centric when spun originally. (Sometimes the tolerance out is so slight that it is hard to see with eyeballs.) Very hard to do with the large assembly's. If off centric the first time when rechecking the second time If the wheel does not go back on the balancer in the exact same position it was balanced in it will be out of balance every time.

 

A couple tricks to do when coning is wiggle the assembly while slowly bringing the cone tight and rotating the the whole assembly backwards with the balancer shaft. This helps seat it.

Also. After tightening it rotate the balancer by hand and look to see if centric. If not reset.

Loosening the wingnut slightly to release total torque on cone and hitting the tire side wall in a half dozen different clock positions and then retighten is also another trick to seat.