hello, I just bought a new place and the kitchen sink drain needs to be replaced. I noticed that who ever did it last did not put a trap in and the current renter complains about sewage smell and the right side is leaking so they have a bucket there. I'm assuming i just replace everything i see here with new PVC and then add a single trap after the two sinks come together.... I have no plumping experience so any help is appreciated. Thanks!