Hi, I've got a G&L ASAT Classic. I love it. One problem: the string tree creates a metallic rubbing sound when I bend the B and E strings. It started doing this soon after I got it. I brought it to the shop where I bought it from and the owner was dismissive, as it's not noticeable at performance volume (it's not a sound from the amp...it's acoustic in origin). But it bothers me when I'm practicing at low volumes at home. So he put a different string tree on there (a Fender one). Little bit lower profile than the original G&L. This did the trick for a couple of months...but now the scraping sound's there, again. Any tips...?