I'm getting ready to install a Toto Eco Clayton. I looked carefully at the new toilet today and noticed two things I wouldn't have expected:
1) Although the bowl is smoothly glazed, the trapway inside feels rough, sort of like 220 grit sandpaper.
2) There is a lip inside the trapway exit that would seem to be able to trap things as they exit the toilet (see attached photo)
Are these two things normal?
Also, how do I know what size (thickness) wax ring to use? The flange is sitting on top of the bathroom floor, and it's 1 inch deep inside the flange. It seemed like I scraped a lot of wax out when I removed the old toilet. Thanks.