Thanks Gizmo,

I gather putting the engine back onto the frame with the blade plate on would be the best way to adjust the timing? I am thinking the drive shaft will be easier to turn.

No other tricks to remember when adjusting the timing?

Dont know why but the full cranks just seem to last much longer than power torques. I have pulled bearings out of power torques that are a couple of years old and they are stuffed yet I pull them out of full cranks and they as smooth as buggery. More often than not the crankcase just needs new seals.