Correct inner spindle seals

[tewels]

Rebuilding a 72 front dana 44. The inner spindle seals are confusing. Took everything apart. Had to pry the metal/rubber seal out. Removed the inner roller bearing. Pressed in a new roller bearing. The seal kit makes no sense. The new small roller bearing seal is only about 1/8" thick. The new roller bearing was pressed in....leaving about a 1/4 gap to fill with a seal that is not thick enough. Do the 72's not need the inner roller bearing seal. Seams that the pressed in metal/rubber seal is adequate. This seams like rocket science....and I'm just a scientist. Can't find a schematic for my specific year. Help.....
PM would be great.....thx.