Mike,
I looked at your T21 at Peco when it first came in and then ordered ours with a couple other options...
I had noticed that in FR's haste to add the power lift it is in the way of the fresh water fill when the top is up. Since I already have a flex hose nozzle like the one above, bought at Home Despot, I didn't worry about it. Plus we usually stay in campgrounds and run with the belly tank empty.
Peco has a T21 on display at the Atlanta RV Show going on this weekend...