Europort PPA2000BT Tweeter Replacement



The tweeter in one of my speakers blew out so I ordered a new one from your company.  It arrived quickly.  I was able to pull the cabinet apart and access the bad tweeter with no problem.  The issue I am having is that the tweeter will not lossen.  It simply spins in place, also it is quite difficult to turn, I have to use a wrench.  Any suggestions?  


Thank you,