I'm looking for some help replacing my weir board. My pool was built in 1991, I've own this pool for 2 years. The weir board has been missing since I moved in. Under the skimmer lid it says "sta-rite" and "U-6". I ordered p/n: 8650-0022. This is a Pentair product but it also says "sta-rite" and "U-6" on the new package. The new board is on a hinge at the bottom of the board, with one mounting screw in the middle of the hinge. I don't see a hole in the bottom of my skimmer where the board is supposed to mount. My skimmer has 2 holes, one at the bottom of the left and right wall. Did I order the wrong board?