Can someone help me out with this. The flange is level to the floor and when I tried to re-install the toilet it wouldn't squish the wax ring. Some people say I just have to use 2 wax rings but the guy at home depot swears by the extension kit. If you look in the picture that's what I have right now. I figured I'd just have to take the 4 screws out, put the extender on top and screw it down with the new screws. But it only lines up with 2 of the screw holes. Will it damage the black piece if I screw them into it? How high should it be above the floor? I think I remember hearing 3/8" somewhere.
