When you are installing threaded inserts into glue-on broadheads I realize that you have to align the the tip of the broadhead with the axis of the arrow/insert. When you get a broadhead that does not want to line up no mater where you turn the broadhead on the adapter/insert what do you do? Does the alignment have to be perfect? Can it be off an millimeter or two?

I guess I've never been that picky about it or its just never been an issue or a problem for me I guess.

Does that mean you don't check broadhead alignment? No spin test or anything?

I deffinetly do on every broad head I put on! Some of the screw on heads I get that have the inserts in already I've had to take out and do over again. I've just never had a problem with me setting them in and getting them to spin good. I guess I should of re worded my first post. After reading it I didn't make much sense! Sorry!

Try a different insert in the broadhead.
If that don't work I'd save that broadhead for hunting small game in rocky areas.

You've got to remember that the broadhead is designed to glue onto a tapered end of a wood shaft. When you add in the machining tolerances for a threaded insert, and then the machining tolerances on a threaded taper adapter, you've got a lot of possible ganging up of tolerances. Usually just changing to a different threaded adapter will cure the problem. Sometimes you have to change the adapter and the insert. Sometimes it takes a bit of force. I keep a 2X4 block on my table and, when I have one that just won't spin true, Ipush the broadhead against it and try to shove it into alignment. Sometimes it works; sometimes I just save that head for wood shafts.

I've only had to do this recently, but my heads went on to my threaded inserts and spun nicely without much tinkering. Maybe I got lucky.
I'd say if its just one head, then bag it. But if you have problems getting them all good, then something else is probably the issue.