I have a Fender Jazz Elite, I have noticed recently I'm getting a weird kind of vibrato kind of split signal almost chorusy sound on the G string, it's more pronounced higher up the fretboard.  I always felt like I had a very faint bit of a split signal sound, however it seems to have got more pronounced.  Here's a list of my troubleshooting:-   1. Tried in passive mode, problem still exists. 2. Changed batteries, problem still exists. 3. Put bass direct into amp without peda