I've been playing around with the Rubik's Cube for about a week now. I was having fun and my store bought cube felt awful, so I decided to get a stickerless Dayan Zhanchi. Of course, since I'm a beginner it feels extremely loose and sloppy (and even a bit slippery--probably because it's stickerless). I do like it much more than my store bought, though. Should I mod it (perhaps tighten the screws?), and if so, how? Alternatively, I wouldn't be opposed to picking up a new cube that's better for beginners. I refuse to go back to the store bought though. Advice?