I need your help, I've got a kitchen on the main floor of home that is connected to same drain as laundry tub in basement...Now it seems that when i use the kitchen sink the water backs up in both the kitchen sink and the laundry tub..I've tried to power rod the drain with a 3/4" 100ft sewer snake but the bits that came with the sewer snake were way to large b/c the drain is only about 2" thick. I only was able to fit in the spade bit but as I was doing so the float or valve inside the drain disappeared. To be honest with you I'm really not sure what that specific piece is...I was able to go the full 100ft and removed alot of grease but the drain is still clogged.