You're not understanding what the OP wants to do. He wants to thread a right hand thread going away from the chuck. That requires running the spindle in reverse, and leaving the threading direction gears in the normal forward position. When you run the spindle in reverse, it will cut a right hand thread if you use a tool with the insert upside down. He can use a left hand tool upside down like Joe Pie does to get close to the shoulder, or he can use the tool I referenced that was designed to do exactly that.