All valid and very help full info....(Just wish you gave it a chance to see if the leak eventually stopped - sometimes I repeat sometimes; not always it is just residue from the wet primary. This happens in TWO areas - The Rotor what U R experiencing now and the other around the starter....)
When installing it is always a good idea to pull the rotor by using two bolts screwed onto the rotor and pulling evenly. Then clean-flush it out with an Eletrical Cleaner - I know a little too late but for those who may go down this road later :up: :up:
So now that you have it open....NO MATTER WHAT and WHO ....install the seal the the other way around. This is clearly stated and documented in the S&S engine guide...for DRY primaries the seal is fitted flat side out.
Now about installing the seal - no expert or experience but am certain about this - you need "some" contraption that will push the seal in evenly...just off memory I think you can use a flat piece of metal with a large enough hole in the center - something like a huge giant washer....insert the seal followed by the washer and tighten the shaft nut until the seal is flushed in tight against the case....You might want to use a spacer between the washer and the nut, just in case the threads do not allow you to thigten the nut all the way, pushing the seal in flush....
Finally some help and input from the members please...when inserting the seal what grease, glue, compund, oil, does one use if any?
Hope that helps....and yes get a couple of seals you may need them...Good luck:up: :up: