Hello, I am new in this forum, I own 2 MusicMan guitars, JP6 BFR and recently my assistant ruin one of my tuning keys, the "High-E Key", I need to know the ITEM NUMBER of the 6 tuning keys or the ITEM NUMBER of the TUNING KEYS for the left or the right of the headstock, I don´t Know how it works...... please somebody help me!! Thanks!!!