340 valvetrain help

Ok guys, got off work this morning and dove right into a list of things I was going to check. I popped the valve covers off and right out of the gate I noticed that the rocker shafts were not on properly. The oil holes were facing up and the grooved ends were backwards. The guy that installed them must have been dyslexic. Took them off for inspection and they looked fine. I think I have diverted disaster! Got them put back on the right way and they are pouring oil onto the rockers now.
Reset all the valves and took her for a test run. There is a slight slight tick now but it was so much better than it was.
Thanks to all for the help.