I am a new bass player with a relatively new bass. All works wonderfully, but I have a buzz in the high A on the G string. A few weeks ago in removing it from the case, the bridge was bumped and came loose. I have put it back with care and yet the G string seems lower to the fingerboard than all the rest of the strings... and the buzz is worse. I would really like to care for this without major expense, any suggestions? Thank you!