Well done for tackling this job yourself, I suspect many people don't bother. a 'good' private mechanic I know always seems to think it's a lot of work and a waste of money as they rarely need adjusting,your case proves that this is wrong, I suspect he just doesn't fancy all the hassle, easier doing simpler servicing work etc.
Not sure if the 650 needs doing as often as the 1000, the valves have never been checked on my 650, over 30k miles now.