Go to reply #41 in the thread below for pictures and notes on things I tried - haven't run yet so I'm not sure? I can't run for another 2-3 weeks due to other things I have going on.
https://www.turbodieselregister.com/threads/252740-crank-seal-install
https://www.turbodieselregister.com/threads/252740-crank-seal-install