I'm sorry to hear that my friend! I still haven't had time to build mine yet but after reading your post I opened mine up to check it. I have 2 blocks and my screws open and close fine. That being said it doesn't feel like it's as substantial as my Aromamizer Supreme. When trying to unscrew the deck, I accidentially unscrewed the whole bottom. If it was full of juice it would have been a mess. The threads don't feel as smooth, not as much knurling (thickness to grab). Just feels less substantial for lack of a better word.
PS One of the blocks was installed in the deck, the other in the case. Here's a picture to illustrate.
Cheers,
Steve
The extra block does it fit the 22?