Installing an acrylic shower pan with a Kohler K9132 "no caulk" drain. Unfortunately, it looks like my measurement was off and the gasket, which should be flush, rises above the waste pipe by about 3/8ths inch. Wondering if this is an absolute must redo, or will it likely be fine? The gasket is definitely compressed for the 7/8" that is fully around the pipe and it's definitely sitting in the bottom of the drain assembly. A 48 hour flood test did not show any signs of leaking. I can also visually view the bottom of the p trap to see no leaks, but cannot access it without pulling up the pan. Thanks for any assistance.