Never use a lens cleaner they can do more damage to your Xbox than they fix. All that rubbing is bad. They best thing you can use is a can of compressed air. I just hope you haven't dropped your box and jiggled any of the parts loose enough that the compressed air could move something around inside.
As for why your box is screwy, well 1st what type of drive do you have in it?
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La Disciplina È La Mia Spada,
La Fede È Il Mio Schermo,
Non salti Ciecamente In Incertezza,
E Potete Raccogliere Le Ricompense.
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