Hey guy's hope you all are doing well. The locking nut on my Ibanez k7 model is a bit loose where screws are going in. Particularly, on the 6th and the 7th string the screw is loose and it won't hold on a grip on it. Instead, it's turning and not holding the strings tight. I want to replace it with the same original model. Where can I look for it? Thank you in a advance!