Recently purchases XDM elite and the store sold me a dragonfly red dot to go with it. I cannot get the 10mm torx screws loose on the weapon. Tried to heat it with no available luck. Tried two different sockets or Allen wrench. Is there special torx socket for this gun. My dealings with tamper proof torx has a pin in the center and these screws look as if the hole is tapered. Any advice will be helpful