King Pin O-Rings v. Cork Seals

["Brett Bonner" <bbbonner@fedex.com>]

Hi - My kingpin rebuild set has 4 cork seals and 4 O-rings.  I really
need to get the front end together today, and the place I bought it from
isn't open.  My workshop manual shows six cork seals are required (3 per
kingpin).  I have extra cork seals in my spares.  So I could use all
cork.  However, if these o-rings are an improvement, and I feel they
must be as they have the cork seals in the kit, where should the O-rings
go?

Thanks