It is extremely important that locking tuners are not used like normal guitar machine heads. With normal guitar machine heads, the strings are wound around the adjusting axle/post. This can lead to the strings always slipping slightly and thus detuning the guitar.

This is avoided with locking tuners. But here it is extremely important that the strings are not wrapped around the adjustment axis/post.

Open the clamping screw of your Monkey Locks - Locking Tuners and put the string through the hole and pull the string tight. Clamp the strings by locking the clamping screw again. Cut off the excess string. Now tune the guitar.