Here is a chart of allen wrench sizes needed for all G&L instruments. For all Tribute models,
refer to the metric chart.

Allen Wrench Sizes	For years up to 2005
Adjustment Type	Wrench Size
Saddle height, Dual Fulcrum Vibrato	.050"
Saddle height, Guitar Saddlelock Bridge	.050"
Saddle height, Bass Saddlelock Bridge	3/32"
Saddle height, Fine Tuner Vibrato	.050"
Saddle height, Kahler 2320	.050"
Tilt neck adjuster	3/32"
Saddlelock Bridge saddle lock nut	5/64"
Vibrato arm set screw, Dual Fulcrum Vibrato	5/64"
Vibrato arm set screw, Fine Tuner Vibrato	5/64"
Truss rod	1/8"
MFD polepieces	5/64"
Studs, Dual Fulcrum Vibrato	1/8"
Studs, Fine Tuner Vibrato	1/8"
Guitar Tech locking nut	7/64"

Allen Wrench Sizes	For years 2006 to present
Adjustment Type	Wrench Size
Saddle height, Dual Fulcrum Vibrato	1.5mm
Saddle height, Guitar Saddlelock Bridge	1.5mm
Saddle height, Bass Saddlelock Bridge	2mm
Saddlelock Bridge saddle lock nut	2mm
Vibrato arm set screw, Dual Fulcrum Vibrato	2mm
Truss rod	4mm
MFD polepieces	2mm
Studs, Dual Fulcrum Vibrato	3mm

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