I use a small torque wrench for the important small ones easy to overtighten. 1/4" wrench 2.5-25Nm
All M6 screws 10Nm. The cam holders 10Nm, rocker shaft M5, 5Nm. Head nuts 28Nm (HD studs), case HD studs nuts got 25Nm last time as well as the other rear case bolts except the largest one behinde the sprocket that got 30Nm.
Case covers must get correct screws, too long and it can pop the inside alu falling into the engine....check that max thread lenght is around 10mm