Short update after two weeks in the van with a family of four:
- Don't bother with Sikaflex on the toilet. It doesn't seal. The Dow 731 (from McMaster-Carr) is working well. Lay a thick bead though.
- Smells are not too bad, especially with the Thetford Campa-Chem. Flush with the lid closed.
- It's a really tiny seat. The one at home seemed huge by comparison.
- Capacity is tight. Our family of four needed to dump every 36 hours or so (pandemic kept us out of other places.) The advantage is that during our trip there were only two obvious places to dump a black tank, while this can go almost anywhere.
Overall, a great modification, if a lot of work.
Ted