I've never seen this addressed on here before so here goes. We just bought a new toto drake ada toilet. With the tank mounted on the bowl , there is an obvious air gap between the two. Even without the rubber ring off the tank ,it hits on each side and leaves a small space between the bowl and tank. Realisticly, when a boy (or man) misses the bowl,pee will get under the tank where you cant get to it to clean up. Are all the toto two pieces like that or just the drake? In comparison ,our 25 year old amer. std. sits flush against a small lip. Thank you for taking my post.