hey... just need to ask a question. My friend asked me to fixed his guitar because the grooves for the screws at the input jack have worn out and the woodscrew won't stay in anymore. I asked this question at ultimate-guitar forums and they told me to plug up the hole with toothpicks and glue and den redrill the hole. Just wanna confirm with you people here whether this will work because I don't wanna do it and den ruin my friend's guitar by accident.