Recently moved into a one-story slab home. Finally got the clothes washer installed and the first time I ran it, a toilet in a washroom about 8' from the washer drain started gurgling when the washer was draining. I know from having rebuilt the wall behind the washer (long story) that the washer drain is (now) properly vented, and there is a stack vent through the roof above the toilet and sink in the washroom. Since I can't seem to have enough fun, I flushed the toilet while it was gurgling and the bowl filled almost to overflow level before draining off slowly and water started leaking from (I think) around the bottom of the toilet, but it may have been some overflow. Should I take the paneling and drywall in the bathroom wall down and make sure the vent is installed correctly? So far I've dealt with two drain vents in this house (kitchen sink, washer drain) and neither one was satisfactory. Not looking forward to that, since the paneling is a 4x8 sheet of masonite with the sink and some shelves mounted to it. Do I need to replace the wax ring at the bottom of the toilet? Since that incident, I've used the toilet several times with no further leakage, although not when the washer was draining. BTW, this forum is awesome, big thanks to Charlie Sessums for inspecting my house and tuning me in here.