27. Follow with the reed valve gasket.
28. Add the carburetor block, gasket and back plate. Apply some thread lock to the bolts and tighten them.
29. Put some thread lock on the four crankcase bolts. Install and tighten them.
All together! Next step: Carburetor equalization mod. Given the position of the engine in the mounts, I will leave the engine off to do that.