I must have allowed the bolt head to move during tightening...if I did, it was an not apparent to me. I'm guessing it doesn't take much movement at all to screw it up on the case side that has no chamfers, even when the 0-rings are lubed. Now I understand why people chamfer the side of the case that has no chamfers. Embarrassing, but perhaps this will help others to be more careful.
Makes me wonder if you are sometimes better off torquing the through studs with no o-rings, then come back and remove them one at a time and install the o-rings without the sealant clock ticking?
I'll take pics once removed- I don't want to de-torque anything right now, as I don't have replacement o-rings yet.
I went with the red Viton because our host was out of the green. They are special order and the wait is six days to ship, but I am going to wait on the green Viton rings and then replace them all, one bolt at a time.
Here's what they look like right now:
