I was at Home Depot to check the closet flange spacer mentioned above and also the waxless seal recommended above. I did come across a Fluidmaster Wax Extender Kit. Basically, it is an extra thick reinforced wax bowl gasket. It did say that it is recommended if floor flange is too low ( 1/4" to 1" below finished floor surface). Since mine is about 3/4" below ff, do you guys think this will work better than the spacer or the waxless seal? Thanks again for any additional info here.