I am trying to tie into my toilet line for a tub. But the problem I'm having is that the toilet from the other bathroom is pushing sewer into the ptrap for the tub. I have a good rise to the tub line. The toilets were originally on a cast iron tee. So when I flush either one it shoots across then flows out to the main line. Could anyone give me some pointers? I attached some drawing of how I could possibly do it. Also a picture of how it looks. Thanks.
