I'm having a hard time finding a Trem Arm that fits my Mexican Jag-Stang Reissue, everywhere I look they say a 5mm wide arm will fit, it doesn't. My calipers say the slot on my bridge is 4.7-4.8mm. I bought a fender Jaguar arm after they guy at music go round checked the fit with a jagstang they had in store. I'm guessing that was the original release one and not a reissue like mine. Does anyone know where I can find one that fits?