I bet using a good high strength spherical rod end vs the junk they used ....
I bet there is some sort of twist going on and that is snapping it.
having the ball end will prevent the twisting to go into the threads
figure out what sizes you need exactly and order from here https://www.afcoracing.com/
This is what I am talking about
even if you have to do a quick drill and tap to change the thread size its an easy fix.

https://www.afcoracing.com/store.asp...d-Chrome-Moly-

__________________
2004 X5(E53) 3.0L
1999 M3(E36)
2003 Z4(E85) 3.0L