hmm, my jtv is tuned a half step lower due to the inability of it to stay in tune( need to upgrade tuners!). Also when I do baritone tuning on it and do harmonics that doesn't work well- it won't track, but I notice when I do the same harmonics with the 1 step lower tuning it works! I want to tune it down with string guage like to 12's to 52's(?) I highly doubt there would be problems. It would be tuned lower, less stress on the neck- at least a step and a half lower. I have taken my jtv down in tuning mechanically, sort of alt tuning and then took it to baritone on the computer part of it and it has had no problem tracking. My main guitar is a YB1 alvarez acoustic tuned baritone or d to d depending on string set. my motivation on this? if you write music on a guitar you are going to use d form and end up with melodies above a d in tuning. my voice sounds like crap above a d. baritone fixes that.