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Dennis, the #8 nose bearing is at the other end, near the crank pulley/fan/alternator.
No sealant on any kind of the backs of the main bearings, except as Henry said, #8 nose bearing. A very light coat of 12 series ThreeBond on the nose bearing. Use assembly lube on the face of the bearings, where they meet the crankshaft.
11 series around the perimeter of the case, but everything must be spotlessly clean and ready to go before you apply it, then carefully but quickly apply the sealant and bolt the two case halves together.
No sealant of any kind on the main webbing, just like it says in the factory manual.
Dow Corning 111 is a clear thick paste, Dow Corning 55 is a white, thin, runny lube. DC111 is the go-to in automotive circles. Use it on the o-ring on the #8 nose bearing. Clean off any excess before installing into the case, and make sure the bearing lines up correctly with the pin.
Use the 12 series in place of the gasket on the chimney stack/crankcase vent. Again, spotlessly clean, OMIT THE GASKET.
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