I’ve got a lot going on with my grinder pump situation. It’s in my basement and the only waste going into it is the washer, toilet, sink and shower. I’ve had the issue of it getting air locked when the washer drains it forces air back into the toilet and sink. Throwing water out of the toilet. I vented it to the outside to try and help it breathe but to no avail. Not sure what else to do at this point. Any help would be appreciated.