For an in ground vinyl lined pool, is it possible to DIY a gasket replacement? I have Hayward SP1084 skimmers. One of the skimmers is exhibiting rust stains and leaks. The liner is only 8 years old and is in good shape. Is it possible to drain the water down a bit, say winterizing depth, and then unscrew the skimmer plate and replace the gaskets and screws with new parts? Anyone ever tried that? I contacted a local pool service company, and they're pushing a full $500 leak test, and then they'll repair everything they find for additional cost. All I want are the gaskets and screws replaced on one skimmer. It's only $30 or so in parts, and I'd do it myself if I knew the liner wouldn't pull, but I've never done it before, and I don't know if that's a legit risk for an 8 year old liner.