Just an update on the Plumbing, the acid didn't work, in fact I got acid all over me in an accident I'd rather not go into. I'm just glad that I knew that Baking Soda neutralizes Sulfuric Acid or things could have really gotten messy ... and not in a good way!
I did eventually get the clog opened up, using a snake (auger).
But, to repeat myself from a few entries back, I'm not a plumber.
We have new neighbors, they seem nice. It's a man and a woman (no kids that I know of yet), we share a driveway with them.