mgc 4x4

Hi guys. I have a simple question to which i haven‘t found a specific answer to. So on a 4x4 there are these „hidden“ center layers when you pull it apart between two wings. I just got an mgc 4x4 and dnm. I tried to put a few drops of dnm between a wing and a corner (i pulled it apart so i could...

So my MGC had this spring noise so I had to unscrew it and lube the spring and screw. The problem is that when I put the cube back, the screw now can't go deeper than a certain point which is too loose. I've turned it 100 times clockwise (yes, I counted) and it still won't tighten. How do I fix...