The vent stack that put our kitchen remodel a week behind
@roonie What's annoying with this house is the old/original construction and materials are good, it's the 1970-80's updates where everything is just wrong.
@griffonvideo I'm not sure if they are code or not for a main vent stack here, but either way bumping the wall out 3/4" did the trick. I'll definitely be using one when I replumb the kitchen sink, currently it has an unvented S-trap.
I can sympathise.