I love Smart Parts' stuff, and I've been using their products for years; however, the Q-lock is not good.
The Q-lock held my Halo B so tight that I unscrewed it by accident trying to get it out, and the feedneck was put on with blue Lock-Tite!
In order to get the hopper off more easily, I completely removed the lever and nut, only the have the nut get cross-threaded when I tried to put it back on! The only way it works now is with the nut on backwards, which is awkward to use.
I'm getting a new one, maybe a New Designz. I hope the other Smart-Parts stuff I buy is better than the Q-lock (I still love my Ion, though).
How did the hopper get stuck like that? If you loosened the neck, the hopper should have popped right out. The only way I could see that happening is if the hopper's neck was too big for the Q-lock in the first place and you forced it in there (which was just a bad call in the first place.) But if you do insist on getting a new neck, don't go w/ NDZ. My friend has one on his Ion and it sucks. It's really hard to adjust and doesn't hold very well at all.