I need to pop the barrel off a Ross MkIII that I'm playing with, but have no info on the threading: Is it RH or LH? I know the MkII had LH, but I also know the threads were changed for the MkIII from the 4 TPI LH threads to something more normal, I just don't know the direction. I don't want to waste too much time & possibly damage things by overtightening.