Neat job-- that's what I was thinking about! Since the front ball bearing is off you probably could have mounted the timing case dry, put the front cover on and used a longer bolt on the crank stub.
The 10mm flywheel bolts on the /5 are stretch bolts and need to be replaced each time. Torque is 45 ft-lbs, dry.
'73 R60/5 Toaster
Luddite. Not just a philosophy, a way of life...