I was installing new strings on my new bass, and as I was installing the E-string, the key lost resistance and now I can not tune the string any further. The peg does not move at all. I turn the key and it moves, but it will not wind the string in either direction. As I turn the key, it has resistance for half a turn, then little to no resistance for half a turn, and so on. The string already has about 3 windings around the peg, so it is loose enough to be floppy, but too tight to remove the string from the tuning peg. The bass is an ESP LTD, and the tuners are closed gear. I see that there is a screw attaching the tuner to the bass headstock, another screw on the tuning key, and there is a nut on the tuning peg. Which of these would I need to start at? I would like to remove the tuner without having to cut the string, so I can fix or replace it.