Hello. I just bought some speaker mounts (http://tinyurl.com/dklzxb) and in order to tilt them down the instructions say to use the safety screws. These are back surrounds rti6s. Using the safety screws means drilling at least three screws in the bottom of the speakers. Instructions (http://tinyurl.com/ccbjwt) actually say use five safety screws but only 6 came in box for two speaker mounts. So I'm guessing three on the bottom is okay.
My question is does anyone know if drilling the holes and using the safety screws can cause any negatives in speaker performance?