I bought a "leftover" J15 for a great price. After many months I needed to change strings (which, by the way, Gibson no longer makes the 0.052, .041, .034, .025, .016, .012 set with the sound I loved) and got Ernie Ball Earthtones. I noticed after removing the strings that the saddle was very loose. Might not even stay seated if I inverted the guitar. Is that OK or normal for Gibson? Also, I tried several times to get the bridge pin for the 6th string to seat flush with the bridge plate but it wants to ride up a little while the others are flush. It tuned up fine and plays fine, just worries me seeing it up off the bridge. That string is a 0.53 instead of the stock 0.52, but that shouldn't be a cause. Never had these questions/problems come up on my Taylor or Yamaha. Thanks!