I completed my Nexus installation - very easy. The only question I have is the tank seems to float via the tank to bowl gasket. It's bolted down tightly but the china still does not touch - is it suppose to? The tank is 1.5" away from the wall and I suppose I can put something between the wall and tank so it doesn't wobble. Terry sent me a picture of his and his gap seemed a bit smaller but his seemed to float too. I love the toilet but this appears a bit odd. Any suggestions?