if you can't do valves,throttle body balancing and an oilchange in 1/2 hr you'll never make it as a BM mechanic.
drain oil into bowl - leave to empty.
cordless drill and remove rocker covers.
ignition on - gently tap starter button till exhaust valves fully open - measure inlets
repeat for exhausts
repeat for other side.
refit valve covers using cordless drill.
change plugs - 2 mins
refit drain plug - no new washer - just 1/8 extra turn - remember to charge for new washer.
add 3 litres oil.
start bike - balance throttles - 5 mins max
adjust brass idle screws for increased idle to show somethings been done.
wipe outside of oil filter with oily rag.
increase tyre pressures to 36/42 so it 'feels' different to owner.
clean mirrors - likewise.
fill to correct oil level
fill out work card for 4 hours
tick all service items
charge £300
next bike please...
you think i'm joking, don't you ?