Hi, Patrick, my Kala TG is tuned D G B D, and my Blueridge TG is tuned C G B D for Plectrum guitar tunes. I tuned it once before to G D A E and it sounded horrible. I read somewhere that sometimes that happens, and one has to fix it, but I don’t remember how.
I used D’Addario 42, 30, 20, 12 (11?) singles — I THINK! However, as I said before, they sounded awful. I still have a set of the afore mentioned ones, but I don’t know if I’ll try ‘em again. I’m happy with ‘em the way they are.