John Tluszcz(?) was Kiko Tovar's apprentice from what I understand, so when Kiko passed he took over. The KT is for Kiko Tovar and the JT is for John Tluszcz. Belive the the JT's are 45-55# draw and the KT's are 55-65# draw. I've always wanted to shoot one, never have had the chance. Absolutely love short bows, even with a 29" draw. Bjansen, can not wait to see the finished product!!!