TightenDO NOT tighten or loosen the screws holding the spring claw in place on the back of the guitar. Those screws areshould never be tightened or loosened. They're not meant for a fine tune adjustment and canmaking adjustments. Instead, you make up the slack between havingadjustments to add a springbridge tension by adding or removing springs. They also help in the last adjustment to make the tremolo parallel with the body of the guitar. In your case I would add a spring. Be sure to loosen the strings first so that.from the sudden added tensionlooks of an additional spring won't snapit...in your stringscase i'd say youre missing them.
Completely false information, I have edited it to reflect the truth.