I'm having an odd and annoying problem with my Ibanez SR505. The cable plug is loose inside the input jack. I don't mean loose as in it will fall out; it is actually secure, however it wiggles around inside the input jack. This doesn't cause any problems if I'm using the neck pickup, but when I'm using the bridge pickup and the plug gets wiggled at a certain angle (even from something as slight as bouncing my leg to the beat), I completely lose my sound and I have to wiggle the plug to get my sound back. It basically turns the balance knob into a second volume knob. I've tried about 6 different cables and experienced this with all of them. I also popped open the hatch on the back and tightened the nut that secures the input jack, as it was loose, however the problem persisted. This is really annoying me because my tone relies on that bridge pickup, and with the plug wiggling around in the jack my bass is completely cutting out on me.