A solution to NOT drill your track forks and have a normal front brake nonetheless

you may also find that in some forks, the diameter internally will go from very small at the crown to bigger only a little higher up.

This means if you hammer your double star nut through the small entry hole it may then be loose higher up right where it needs to grip.

Depends on the steel, as far as I know starnuts are made of a kind of spring steel, so should not be loose then.

Could we open a separate forks-lower-hole-measure thread? Everyone, please participate.