Seriously at my wits end

Embrace the leak. Mine is a fresh rebuild, everything was sealed with either permatex gasket adhesive or aircraft gasket sealant. The only leak I have is where the parking break cable goes into the trans because I had to break the seal to adjust it. Lucky for me it drips on my H pipe so it burns off before hitting the floor.

I sealed everything, including the o rings. Doing much better than before.