#1
My E and G strings are causing trouble for me, and I just realized that the bolt connecting what holds the G is movable with the fingers. I plan on tightening both bolts, and I was wondering: Could this cause any trouble?

The bolts above the gold string ends.

#2
yes asap but only a little bit at a time u dont want to screw it up!!
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Quote by TheAmaranth
I once broke a G-String while fingering an A minor.

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#3
It's movable with your fingers because the action (space between the string and frets) is so low there is no pressure on the screw from the string, so the cylinder rests on the bridge.

Use an Alan wrench to tighten the screw (or bold) if you want the G string higher. This is a fairly common adjustment, so don't worry too much, but don't tighten it too fast. Whenever you're working on your bass always take care, no matter how simple the procedure.