Thanks for the comments. I went to bed last night without having it fixed. Once the kids were asleep (i.e. Not needing supervision or asking for things) my brain was able to think back to all prior years and then I got up and tested a few things that solved it.
It is the weirdest thing but the two lines in the bathrooms needs the valves to go in opposite directions from eachother. I don't get it as they are both in-line but one is aimed towards back and other one forward. If they get shifted water goes out the drain tank.
There is NOTHING in the manual about it
And yes marking it on there and writing it in the book. Should be a 10 min process took all evening and lots of frustrations.