I've got a 2007 4003 that I bought new and I absolutely love it but I put some Chromes on it to try and when I plugged it back in the vintage selector switch (which is a push-pull pot on the bridge tone knob) was permanently engaged. The switch feels the exact same, it still moves up and down like it should and has a solid 'click' but the bridge pickup loses all the punch and power and bass that it normally has with the switch disengaged. Do you think it's a short somewhere or has the push-pull pot gone completely bad? I've opened it up and I can't seem find what's wrong. Has this happened to anyone else?