I put the 3m tape on the inside of the case and on the the metal band of the phone I use the extra piece of the Bodyguardz dry apply that I have. Since I already have the Bodyguardz installed on the metal band I just cut some very thin strips and put it on the front and back sides of the band as to not let the metal touch the case. So using the clear bodyguardz it will not showed and no tape residue problem.
Thanks!!