I have an object stuck between the skimmer and the pump. I am almost certain it is an old skimmer plug that lost it's outer rubber ring seal and got sucked down the skimmer line one day. When trying to flush the skimmer line both ways, it will sometimes open for a few minutes while vacuuming only to get stopped up again. My guess is it is either moving and or turning at some point to create the clog. I have read similar posts that this could be fixed by roto-rooter. That seems a bit harsh. I would like to fix it with a DIY way, but I am not sure the best way to go about it. If not, do pool services have a way to fix this?