Rear wheel hub studs

I am trying to change a couple of worn wheel studs. Having got one out, with great difficulty, I am not confident about getting the new ones in without damaging the thread.

Is there a tool, method, or knack for installing these?

Brian [:^)]

Brian,  I just did all 5 of my front hub studs, just drill the back out to break the crimpping and use vise grips and screw them out.  I then replaced them with actual bolts and red loctite.  work great and the new bolts are stronger than the old studs good luck...