We are currently having our house re-plumbed, we are adding a second bathroom and revamping the current. For the downstairs bathroom I have purchased a Toto Vespin with a unifit adapter. My plumber hasn't seen the unifit before and is saying the vespin will surely clog due to the design of the adapter. Does this toilet clog ? Should I return it and try to get a Drake? In looking at the adapter I see my plumbers concern. The other toilet I purchased is an ultramax which doesn't use this adapter. I had purchased the Vespin because I needed a 14 in rough but as it turns out the plumber will be re-piping the toilet anyway so I could use a 12"