Hello all, Bass: 2008 Fender American Deluxe Jazz 5v. I bought hex keys to adjust my truss rod, but none of them fit. I'm at the end of my rope. I have the following hex key sizes: 6mm, 5.5mm, 5mm, 4mm, 3mm, 2.5mm, 2mm, and 1.5mm. None of them fit. Any immediate help would be greatly appreciated. Thank you.