That is one problem you can encounter with that style of head. It is no big deal. Just heat the head and insert just enough to release the bond and make the head spin on the insert. Push down while turing the head. Check to see if it spins true. It should, but if not try again until it does. I know Magnus would fix them for you, but it is easy to do. I would contact them however. Just to let them know it happend. I know they want to do everything they can to keep this from happening. As for the 125 grain stinger, it is the finest two blade broadhead I have tested. I believe my review speaks for it'self. Both heads are great, and I think you will be happy either way.

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS