If you want to be really sure about the lobes, you can put a micrometer on them from bottom to top and check for consistency.

I checked my rockers by buying a new one and checking the profile of the old ones against it. You may aslo find that the "hockey puck" shims are worn from contact with the rocker arm, or that the rockers have a lot of wear where they rest on the ball stud. Either condition will cause noise.

Sometimes a new puck of the same size, or one size thicker will eliminate the noise.

There ain't a great way to check the ball studs. If you can move them by pushing on the rocker with a hammer handle with the valve closed, then they need replaced. If you can feel a large difference in where the rocker sits with the valve closed vs open (Herr Fuch's finger check), then replace.

And certainly replace the plastic pieces on the oil tubes while you are in there.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe