After some time, dust and dirt can Create up on The inner mechanisms that Manage the movement of the lock. It is possible to try implementing dry graphite to lubricate it or if you think that it would be much more than just Dust impacting it, a locksmith can http://locksmith-cost-to-unlock52840.link4blogs.com/20130769/how-much-you-need-to-expect-you-ll-pay-for-a-good-emergency-pop-a-lock-number-in-memphis-tn