How do I remove the knobs on the John Petrucci guitar? There is a grommet over the knob that is difficult to remove.

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Push the grommet down towards the body carefully as to not scratch the finish (don't use your fingernail as the grommet can tear). The set screw for the knob (5/64") will be exposed. Loosen the set screw, remove the knob, then remove the grommet.
Last modified on Thursday, 17 November 2011 07:17