Stop in for a cup of coffee

K.. second side of rockers on and done.. 17-20thou per pair, first side took 2 hours, second side took 10 mins :) I need to figure how many thou per turn on my rockers so i can lash the valves (hydraulic).. and waiting on oil filter which will be here tomorrow then i can check oiling..
BTW... the plate in the block behind the oil filter has 4 holes, any reason to add 4 more?