tl;dr: New to TOTO and CST776 series — unsure if water level is appropriate and whether fill tube should stay positioned as it is out of the box.
Now for the lengthier version…
I just recently purchased three CST776CSFG's to replace Mansfield Alto 160's (good riddance!), and I found it surprising that out of the box, it was directed into the tank, and not the overflow. (I'm new to this stuff and the forum, but it seems pretty typical for it to point into the overflow? i.e., I found myself wondering about this because of posts like [this](
https://terrylove.com/forums/index.php?threads/low-water-level-in-toto-toilet-bowl.32416/).
And, indeed, the water in the bowl, to me, seems quite low if directed into the tank. I did ask TOTO technical support, and they mentioned,
Is there a
disadvantage to switching the position to fill into the overflow directly? Or conversely, an advantage to keeping it the way it is inside the box?
Here's with the tube filling into the tank:
https://cln.sh/lsKNc8OkOaAIvEMcQG7h
And here's with it filling into the overflow tube:
https://cln.sh/0p4C9P3R9shabtwrJPFl