I'll get it back together, just sucks.
Going back with ARP bolts/ washers on the end of all four cams. The FR500 cams use 10mm hardware which suprised me when I first built this motor and now it pisses me off that FR thought a 10mm cam bolt was a good idea.
RoushYates drills the cams and taps them for a stud/12 point nut on their Daytona Prototype engines. Depending on what I find I very well may take the cams off the heads and have them drilled/tapped for a 1/2" ARP stud.
The 10mm bolt has been used since about 2001. There are plenty of cars with the 10mm bolt that don't seem to have a problem.