Thanks for the tip, but I think that is way out of my knowledge to handle...
I have to blaim my bad eye, and should not work on the internal of engine at 3:00am............I did find out there is a hugh 0.3mm silver shim underneath the combustion chamber, it is just the color of the shim look so much like the surface of the button, and 3am does not help on my eye...
Thanks for the info............