I need some help. when changing out my knobs on my Epi 2012 Standard pro (made in Indonesia) the stem on my push pull knob came out. Now it doesn't stay in place so i need to replace it. I took the guitar into Guitar Center and was told they do not have the replacement for it. I have sent help messages to Gibson and Epiphone on their websites but have not heard back. Does anyone know what i can do to replace this?