I ran into the same problem after I had avalve job done on mine. What I did was got some emery cloth, soaked it with WD40, removed the nut ( below the pivot ) and resurfased the bottom side of the nut. I had 4 non adjustable valves. I think that your cam really ( unfortunately) is the problem. Well good luck.
If your head was worked on, someone may have removed the cam journals, which at that piont it REALLY could be trouble.
If your head was worked on, someone may have removed the cam journals, which at that piont it REALLY could be trouble.
