Okay, you probably have answered this a million times but I couldn't locate what I needed to know so here goes. I'm going to finish my daughters basement and have run into a little problem. She wants a bar sink which unfortunately is not going to be on the same way as the bathroom so I have a problem with the waste line from the sink. There is a drain line from the kitchen sink that is close that I would like to tie into. The pipe is white PVC with a clean out just above the basement floor level. So I think I can add a 3x3x1 1/2 combo tee - wye as long as I get the drain line from the sink high enough. My question is how to I cut into an existing drain line and add a the new tee? I really don't want to redo the whole drain line. thanks