We recently had some issues with our septic and drain lines. The person who built this house didn't install any clean-outs on the drain lines. We have been working with a plumber friend to get a couple installed and have most of the drains situated. Our friend has been unavailable for some time and I am a bit stumped on this last clean-out. The line is PVC sewer line, and I just learned that it doesn't connect straight up to standard (sch 40?) PVC. I tried using the rubber boot connectors, but the sewer PVC is rather flimsy and I can't get a good seal. The only T I can find for the clean-out is standard PVC, and I have no idea how to go about connecting it. I'm sure I'm missing something very fundamental, but any tips would be greatly appreciated.