...tonight while playing I broke a D string on my JTV-69. The remnants of the string seem to be caught up in the tuner. Friends and myself tried in vain to get the remnants of the string out of the tuner to no avail. I've read that these are locking tuners so how the heck do they get unlocked so I can get a new D string on the guitar. I figure there's a 'voila' secret to this so I don't want to poke and prod in the tuner too much with small sharp instruments. Thanks in advance...