I have asked my mechanic to check the wear on the rocker arms on my 916, and he came up with an idea of checking the wear with the help of "optical fiber". He has a friend who works as a inspector at the vehicle testing here in Finland (don't know the exact or corrent word for this in english) and they have access to high tech optical fiber. So my mechanic thought to try this out.
If this works you could save some work, but that is not perhaps the main point - the point is to see if it actually works.
Have you any comments? Have any of you tried this?