glue

I purchased a gear cube from cube depot, and soon after the centers began to fall out one by one after turning. I read somewhere that carefully applying super glue to te centers (bad idea) will stop that. I did it and te cube started to seem faster, looser, and then locked completely in place. I...

The center cap (or w/e you call it) snapped (well, "flew") off of my cube when i was turning it (i just finished lubing/sanding it) and it won't go back on!! (like, it snapped off and I can't tell if there's supposed to be a piece inside or something, but it won't stay on... every time i put it...