I knew I would need to test all the head studs before assembly, especially since I had to change several of them.
I took creative license from an example I saw from William Wynne. I combined a long and short tube to be able to set it on the studs and not worry about trying to hold it or keep it from turning
William critiqued my design and said to make the bottom holes a little bigger to allow for failure of the area around the threads in the case.