John was kind enough to post this picture a few years ago and it's how we've been sealing engines for years.
Outer case halves perimeter : Threebond 1104 or 1194
Bearing web surfaces: Loctite 574
#8 Bearing O-Ring: Threebond 1211
Case Thru Bolts: Dow Corning 55 on Green Viton O-Rings
Flywheel Seal: dry
Front pulley Seal: dry
Intermediate Shaft Cover to Case: o-ring Dow 55, gasket style 574
Oil Breather Cover to Case: Loctite 574
Cylinders to Case: Curil T
Cam Towers to Cylinder Heads: Threebond 1104
Cam Chain Housings to Case: gaskets Loctite 574
Cam Chain Housings to Cam Towers: gasket Loctite 574
Cam Chain Housing Cover to Cam Chain Housing: Gasket Loctite574
Gaskets: Thin coat of Loctite 574