Here are some valve clearance specs. Thought this might be useful to some.

VALVE/TAPPET CLEARANCE (400/500)
Intake 0.05-0.10 mm (0.002-0.004 in.)
Exhaust (400) 0.22-0.27 mm (0.009-0.011 in.)
Exhaust (500) 0.17-0.22 mm (0.007-0.009 in.)

VALVE/TAPPET CLEARANCE (650 H1)
Intake 0.1016 mm (0.004 in.)
Exhaust 0.1524 mm (0.006 in.)

VALVE/TAPPET CLEARANCE (650 V-Twin)
Intake 0.10-0.15 mm (0.0039-0.0059 in.)
Exhaust 0.20-0.25 mm (0.0079-0.0098 in.)