I think Mark Johnson Plumbing did a pretty good job. They've been here two times, this is the second time I use them to put a wax ring on my kimode. They were fine and they cleaned up after themselves and did a real good job. I don't think they could have done anything better and I would possibly go back to them, the one thing is that the job was a little pricey, that's why I'm not giving them all 5 stars.