aruba5er wrote:
I can not imagine why glue at the toilet pipe would effect the draining of the black tank.
It's because the TP and "solids" kept building up a cone shape directly below the toilet until the cone backed right up into the toilet. All the "fingers" of hanging glue trapped the solids/TP from flowing properly. The tank simply could not get filled up with the blockage in the way and as well, water was not able to get into the tank to dilute the solids/TP and it would not move. Again, after using liquid Drano (as per KZ's manual), the tank drained fine after that so doubt the vent was an issue.
Have now been out camping for 24 hours on our first outing this year. Same make and model of TT and the black tank is working normally and not at 1/3 yet. The old TT would have been backed up into the toilet by now.