Replace or not
 

Hello

Some of you might know me from Turbo Forum. I have an ongoing thread there

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/634616-another-rust-combat.html

about my project, but as I am rebuilding the engine, some of the questions are not specific turbo related and here may be some more people sharing their experience/knowledge.

So my running question is:

There will be new bushes and shafts for rocker arms (worn).
Checked bolts etc. and found little axial play of ca. 1-2/10mm at the cups from valve adjustement screws. Is this normal or wear? Guess not but wonder if really worn or from new like this.

Thanks in advance
Roland