Hi all - I had the intake and valve cover apart to replace the gaskets on my '63 Bel Air, so I figured I would do a valve adjustment while I was there. I have the 230ci inline six motor. I did it the adjustment by the book, ensuring both valves were closed on the cylinder on was working on, then tightening the rocker nut until all lash was gone, and then turning the nut an additional one full turn. I have done this adjustment twice now. I had no valve train noise before the adjustment. Now I can't seem to get rid of the ticking/chatter. Any ideas?