Usually a picture is worth a thousand words......
I can describe that one in three....... Has No Clue!
That may be one of the great contributors to the leak. Installing a shim on the back side of the seal thinking it's going to reduce the lip I.D. for a greater interference fit on the crank surface is misguided at best.
That's like taking a .010" under crank and using standard bearings with a .010" shim behind them thinking your going to cure the clearance problem...... AIN'T GONNA HAPPEN!
Get out your magnifying glass and tell me the numbers/letters that are molded into the seal lip area please.
