If you have one available, or you wish to purchase one, a string winder can be used here to quicken this process.
Unwinding strings on a guitar with a floating bridge could cause the other strings to tighten. Therefore, it would be a good idea to start at the smallest string.
Using one finger of one hand, press down lightly onto the first fret of the string you are changing. Use the remaining fingers to lift up the string. This will ensure that there is slack on the string to use when winding it later.
Wrap the string around the peg clockwise and underneath itself.
Fold the string over itself and crease it so it will stay in that position when you wind it.
Re-examine the bridge for any changes in bridge balance. If the bridge does not line up with the body of the guitar, move on to the next steps to adjust the tension in the springs on the back of the guitar.
The picture to the left shows one example of a bridge that is unbalanced, where the tension in the back springs are pulling too hard on the bridge and must be adjusted.
Adjust the tension in the springs in the back of the guitar by using your Phillips head screwdriver to tighten or loosen the screws pulling on the springs.
It shouldn't take too much to adjust the tension, maybe half a turn or so for each screw.
Be absolutely sure to turn both screws (if more than one exist) the same amount.
Tune your strings once again to see if the adjustment you made to the spring tension was enough to balance the bridge.
Now you must repeat this step several times. Go back and forth between tuning the strings and adjusting the spring tension until the bridge lines up with the body of the guitar. This is the part that will take quite a bit of time.