Hi guys,
I just did it.  The longest kind broke.  I wonder if any of you have one to send me for cash.  The length is about 220mm long.  
Still has over an inch sticking out.  I think, I will weld a nut on it and turn it out.  I guess, it was installed with locktite.  That needs over 100 C to heat up to brake the bonding.  
So, let me know if you have one for me.
Thanks, Zoltan