Hello, my TH400 gearbox (3-speed, 1971 Cadillac deVille) just doesn’t leave me alone… When I start the engine in the morning it stinks relatively quickly after burnt oil. bonnet on – around the ATF filler nozzle floats gear oil. The rod hangs almost beside it, has probably been pushed out by pressure. What is this??? If I drive several times on the same day (with breaks) it doesn’t happen any more. Pillar stick stays in it, everything ok. Only the next morning again. I don’t understand. Does any of you have an explanation? Thank you for your tips and opinions! VG Olli