Helical insert

Guys, Im rebuilding a dl150 and have a question regarding the threads on the horn cast.
They are a bit worn but will probably clean up with a re-tap.
But should i not bother and just go straight to the step of inserting helical inserts?
They are a bit worn but will probably clean up with a re-tap.
But should i not bother and just go straight to the step of inserting helical inserts?