Are the stock vertical feednecks removable on X-mag breech modules?

I removed the two small grub screws in the ends of the breech block, but the neck won't twist out. Are they held in by loctite or press fitted as well? I want to get a new stub pressed in to take either a clamp on or threaded cocker style neck. The stock one is way too small for 90% of my hoppers.