I just recently moved into a house with a pool that has been neglected for years. I noticed while working on it that it has a strange looking skimmer with an offset step to it and found it to be a Pac Fab skimmer and after looking at a diagram of it, see that I am missing a flap that diverts water to suck from the main drain. every website I go to says that the part I need is obsolete. I have seen diverters that sit on the bottom of the skimmer housing, but would push my skimmer basket up too high. This is a 80's pool from what I can tell, but I need a way to skim and pull from the main drain because I am getting a lot of fine dirt settling on the bottom.