I'm scheduled to replace my vinyl liner in a few weeks so this has also led me to take a close look at all the pool equipment. I noticed some small air bubbles in the pump and started going through the steps in the post for identifying suction side leaks (still in progress). The pressure is good and I never lose prime. As I was looking closer at both skimmers there seems to be a crack around the circular area right outside where the basket sits. I'm not really sure if this is a crack or cosmetic as there seems to be a small strip around that area in some places. If I had to guess it does not look like an existing patch and part of the manufacturing process. If it helps the skimmer top says it is a hayward brand. From what I understand, the replacement of skimmers usually requires a liner to be replaced at the same time which is where I'll be in a few weeks. I would prefer not to replace the skimmers but if I'm at that stage I guess now is the right time to avoid paying for a liner twice. I don't know the age of the skimmers. Any thoughts?