Thanks,
Yes, I did tap the thrust pin and a 6mm bolt goes all the way in. My present problem is I haven't found a 6mm bolt long enough to be of use (60mm would be just about right). I'm at my sister's house here in Illinois so I don't have my tools (Montana). A piece of 6mm running thread would be nice so I could make my own impact extractor. I had no problem pulling the guide rail next to the cam as that thrust pin can be taken out with a short 6mm bolt. So, I'm in good shape with cleanly tapped threads in the pin, just need to find running thread or a longer bolt. I know the tnesion rail and chain tensioner are both shot.
Ralph