When you do get valve covers off ,bump engine around until cam is on base circle one valve at a time and check to see if you have any up and down movement with pushrod if, you do that valve will be out of adjustment adjust the valves just like the morel site said and you should be good.But remember if you primed the lifters with oil which is a no no adjust the valves properly and let them set overnight to bleed the oil out of them, then readjust them like the morel site says.If this doesn't fix them you have other problems.