You know, i really appreciate and value this site. Everytime i post anything, i get some smart ass remark for an answer. I really dont want to have attitude, im a nice person, really, i guess i feel cornered sometimes and lash out in defense. IM sorry, and thank you, Jim, for your informative answer. It makes total sense why the line would be smaller now (thanks). Usually when i see these grinder pumps they are only for the fixtures that are below the level of the sewer line (ejecting waste into a higher pipe that exits the foundation via gravity), this house had the entire house going into the grinder pump, rather than only the bathroom and bar plumbing from the basement. It was the first time i saw this. sorry for the attitude.