gasket leak

Hello All! I've been lurking for awhile now after purchasing my first 60 in March of 2023. After replacing all vacuum lines, power steering pump, rebuilding the carb, new fuel pump, fixing the timing, rebuilding the front knuckles, new rear brakes, new J tube & gasket, etc I am now getting to...

I have a gasket leak under the front water bypass on my 2000 LX470. I have a new front bypass, gaskets and a new water inlet. I plan on removing the throttle body to get access. This new OEM water inlet has a pre-installed black gasket attached to the water inlet surface (photo). I have only...