hi, pool is 20x40 inground vinyl liner with polymer walls with a hayward sp10841 series skimmer and my skimmer needs to be replaced after being broken by jack hammer during demolition of the deck, my question is, can this be replaced with the existing vinyl liner with the existing liner hole cutout , can you just drop the water a couple of feet and pull liner down enough to get a screw driver in to screw in the new skimmer? my big question is will all the screw holes and the throat cutout in the liner from face plate be able to get lined up perfectly again for the new face plate, is this a normal repair. thanks in advance.