I just got my JTV-59 yesterday, so I'm still playing around and learning, but I've encontered what I think might be a defect with the guitar. I'm going straight from the guitar into my computer and into Workbench using the supplied Variax USB adapter.  The 1/4" line is going straight into my Fender Twin (no effects boxes or pedals). I also tried going straight into the amp only - same problem.  I first noticed that the B and high E string volume in Variax mode was significantly lower than the other four strings (everything was OK in non-Variax mode).  OK, I found out how to fix that by playing with the string volume settings (0.33 for the bottom 4 strings to 1.0 for the high E and B).  But then, I found that in all Alt Tuning modes, I'm getting various levels of drop out, warbling and dual tones on just these two strings.  I've tried to find some way of refreshing or reloading the Variax alt tuning settings, but no luck.  These two problems are making me think that the guitar might be defective.  Any help in addressing this problem through a software patch would be sufficient and appreciated, but I'll send the guitar back to you guys for in-warranty repair if I need to.

By the way, I'm still trying to find out where I can buy a spare JTV-59 Li-ion battery as a backup.