So yesterday I got a plumber out there. I decided to install one vac assisted WC in each office suite where they were having trouble. The first one had both toilets inop. Would not respond to plunging. So we picked the womens and he removed the WC and ran the line. He hit something hard and chewed through it. Viola! Good drainage. In that suite there were Kohler two stage 1.6 gallon flushers. So if you don't hold the lever down you get about a gallon flush, holding it down will get all mighty 1.6 gal. So if it works well I'll pan to install another vac assist later.

In the other suite, when I got there I plunged it five or six times and got it flushing fine. We went ahead and changed that one to the vac assist anyway as the ladies use a load of TP. He ran that line too and found nothing in it so it was just lots of paper and not enough flushing water. The one we removed is a Gerber single stage flush 1.6 gallon.

I saved the Gerber and put the Kohler fancy two stage flush on the curb with a sign saying it works as designed and its free.

Thursday the guy with the video camera is coming to film and record my main line to check for low spots but at the moment it would appear to be not a problem.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.