So I took the new P trap home and the pipe was too long to fit into the existing connection. I brought the pipe to work and Spaghetti Eddie cut it with one of his handy little tools.
SO.... the new pipe is in and connected to the old pipe and dang it if the new pipe doesn't leak in all my connections. I have to take it all apart and see what is happening but I have a feeling that I know the problem and it won't be able to be fixed until we deal with all the bathroom plumbing.
The house we live in is OLD and it was put together by a farmer who used bits and pieces of whatever was available for him to use.
The plumbing has partly been replaced, but the piece under the sink has not been and it is not plumb or square or any of the words people like Holmes on Homes use when they talk about houses. The existing pipe - the one I have to tie the new p trap into - comes into the space under the sink at a downward angle, which means I can't thread the new pipe onto the existing pipe cleanly (if that makes any sense).
Forcing the new one onto the old one pulls the connections on the other new ones and causes leakage.....
What to do, what to do.....
For now the new one is connected and I have a bucket under the sink. The clog is gone so it drains nicely, but we have to deal with a drip for the time being.