It did reoccur or you just fear that it might?
If the camera has had a lot of use, then tightening screws into wood ain't always going to solve it: the holes might now be too big to retain tightness for long - use will slowly begin to move the screws within the hole again.
My first thought was to remove the metal part and insert a small bit of wood into each hole in the wood and screw it tight again; however, I'm not sure that that might not move the thing permanently out of true. Maybe a tiny drop of one of those instant glues into each hole might achieve the same effect without any change to the size/relative location of that retaining hole.
Don't sue me if it doesn't work!