Sye,
You don't need any sealant on the bearing journals, it serves no purpose. You could put a thin smear on all three of the seals on the left side of the gear box, input shaft, output shaft and kickstart shaft to be on the safe side. Also on the crank centre 'o' ring. Make sure the kickstart ratchet is latched on its stopper plate, right side of case, before bolting up. Might need a rubber band to hold it in place.
Brian.