You might want to leave your pump off for a day and see if your suction side is leaking. This way you'll know that the only problem is the skimmer sticking out a little. I recently had to cut through my concrete to replace all of my return plumbing. I'm curious, what's the quote for replacing a skimmer. I decided not to replace mine since I leave the pump on all the time. While installing the liner I did find that the skimmer faceplate was installed incorrectly. This had caused some washout around the 2 panels by the skimmer. I had to remove those two panels and scrape the dirt that had escaped and put it back behind the panels. Good luck with everything.