340 build .30 over

Not yet ill let you guys know how it gos, right now i just ran into a rocker issue the roller is not 100% sitting center on the lash cap here is a pic with valve open. Will i be ok to run it like this? I know it will wear in time but how much time?

pc screen shot

Next option run my stock 318 rockers how muchloss of power will i loose?