You can see what I have so far here:
http://devestechnet.com/Home/TheVenerable261I am awaiting two things to add to it, the compression numbers from Tim and the detailed instruction on how to properly drill the 848 head for the 6 water jacket holes. This how-to is to the credit of many people coming together. I got info from an article called The Forgotten 261, added some inliners.org info and lots of great stuff from some of you. If you would be so kind as to read it carefully, and then tell me how to make it more readable, more correct, and more complete, lots of people out there greatly appreciate it. When its complete, I will gladly share it here as well.