Computer desk keyboard tray stuffed in very stuck should do!

Computer desk keyboard tray on both sides of the two sliding rod, the teacher slipped inside because the oil is too much, or long time wear and tear, the gap becomes large only loose to slip out. There are two solutions, the first first of all the sliding rod on the oil are wiped clean, and then the front section to put a strong suction stone, he will not slip. The second is still in the front part of the lock a nail up screws can also be, but can not be pushed into it.