Is it just my JTV-59 or does the open tuning function work less well on the JTV than on the old Variax 300? When I retune a model by more than a couple of frets it sounds like the original untuned note is breaking through into the amplified sound (this is through the amp, not just the odd effect you get from hearing the guitar acoustically). The untuned note is relatively quiet but it gives an almost twelve string effect and makes it unusable. The same thing happens with the baritone model. I still have a 300 so compared it - and that definitely does not have the problem. I don't know if this is a fault or something that everyone's experiencing. Any thoughts?