Fillopian? di Presso? Courier's Tragedy?

This section of the book I found the most confussing. To start Oedipa and Metzger meet a man at The Scope (a bar) who talks to them about the US mailing system and how he and his Peter Penguid society have their own private mailing enterprize where they are even required to send mail. Here this idea of mail and communication is starting to emerge as an obvious theme in the book, as the first page of the book Oedipa is recieving mail about Pierce and then in Chapter 3 she recieves mail from her husband and now she is talking to a man oppose to the US mailing system. Then Oedipa finds the wierd shape in the bathroom which we still are unaware of its meaning and as we later find out that the symbol is of some mysterious importance. To me, this just seems so strange. First off, why is Fillopian, obviously a play on his name, talk to Oedipa and Metzger so openly like they had been freinds. Secondly, why is this mysterious sign written in the stall of the bathroom at a random bar. If this symbol turns out to be some kind of heroic finding that relates to the Russians and Americans and postal services or something then I am going to go back and be really puzzled as to why that sign is randomly in the bathroom stall at the scope. Anyways, then Metzger and Oedipa meet di Presso, another play on the name, who appears to be some kind of con-lawyer who is running away from his clients. I was not sure if I read this correctly, but I think he is trying to tell Metzger that he is not trying to win his lawsuit for his client Tony Jaguar for the bones he sold to Pierce and was never compensated for. Why bones by the way? The author could have used any kind of lawsuit he wanted and he uses bones that were used for charcol, bones from dead US soilders over seas. That appears to me to be a wierd and gross image. I am also confussed as to the role of the Paranoids and why they went with Metzger and Oedipa. Are they spies? Another part that really confussed me was the Couriers Tragedy and the tristero. I do not understand the connection that Oedipa is making between the symbol she saw, the Fillopian character and the play. In the fourth chapter Oedipa even goes and buys the script. I am also confussed about Pierce's stamp collection. Overall I think I am just confussed over the connections that are happening, like the stamps and the Inidian killer and the play and the sign in the bathroom and the mailing system.