So I have a neighbor who is a single mom with two kids. Her Hayward pump SP3010X15A is leaking. A causing a swamp between our house and hers. It looked as though the seal was leaking. She tells me that she cannot afford to have someone out to fix it. I volunteered to try and fix the leak. Went and bought a new seal and gasket. Installed it this morning and it still leaks. Has anybody ever replaced one of these seals. I followed the manual but just cannot get it to stop leaking. What did I miss????